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gbal

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About gbal

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  • Birthday 09/24/1943

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    northumberland
  • Interests
    accuracy
  1. What four rifle calibres - factory ammo

    Which 4 (better which 4 categories) has to reflect your quarry(and/or target comps )-if you shoot large plains game,and dangerous African-that's two no compromise must haves :if you shoot lots of close in bunnies,and don't Safari-you have diffferent options. There are also various legal issues worldwide (and different). OK,mine are one each from : !7rem/204/222/223 class,for small quarry out to say 250,gimme distance for these cartridges 243/6mm /6BR/maybe some 6.5s, for medium size up to smaller/medium deer quarry or a bit further distance for the small quarry. 308 or similar (3006/284 etc) for big UK quarry 4th....well,depending on useage etc,could be an expansion of any/overlap above-though the above three cover most pretty well....how about a 17/22rf where quarry is small,with very short ranges,and 'minimum disturbance'? Or even a general purpose target rifle-though one only, has to be a compromise (6BR;6.5)...12g shotgun maybe-but not if only as a (slug) rifle. I don't think wildcats would change much-of course there are some good ones within each 'category' but very few that change the parameters enough. All hypothetical,verging on 'in extremis,'of course,just camp fire chat for those Desert Island Disc type characters. gbal
  2. Ralph,always best to write down the brass's reloading history. Eg Batch 2 (first loaded (date) and number of subsequent reloadings (eg 6) thenyou have a fair idea....time to ditch when some sign of ageing appears (the brass i mean)...it depends on the number ofreloads,how hot/not they were,the quality of the brass,and the care innprepping etc. Certainly any sign of vertical case neck cracks is a bin absolute,as is the potentuially disastrous horizontal line/bulgeabove the case web-som check with a bent wire inside-you can feel a bulge-bin immediately (case head separtion is very bad news,and imminent). In general you are right-the neck area is worked most,and is thinner probably. Keep the term 'crimp' for the extra. Proceedureoften allpied to pistol ammo,or to eg military bottle neck ammo subject to extra rough treatment.Most rifle cartridge reloaders don't crimp-though hunting bullets often have a crimp ring,and may be crimped (eg in semi autos etc).BUt yes,neck is slightly oversize when bullet leaves,and is Neck resized (FLtoo) to slightly less than bullet diameter,so thee issome bullet retentio...it varies (and bushings give some control over such neck tension for bullet retention). Max/hot loads will usually display primer pocket expansion-bin them- before any other sign of overworked brass-normal sub max loads much less likely to do so. No absolutes-count reloadings,keep a record, see what others with similar loads tend to say (only a very approx guide) and keep an eye on it-especially as your reloads mount up...annealing frequently will help to restore brass and give more reloads. One reason some quality brass (eg Lapua) finds favour is that it will tend to give more reloads (and may well recoup initial higher price). But it's a 'monitor'each time and check for signs,and bin them-if you keep batches the same,and so b labelled,when even one goes-you have a clear warning,the rest should be about as suspect. Like memory,and possible other functions,there are no absolutes,but generally wear and tear occur in only one direction -and in brass that's toward the bin-it'sa comsumable... :-) gbal
  3. Shot gun followed by rifle shooting

    Regular good practice (and that begs questons!) is likely to maintain shooting performance. Shooting less is likely not to,but drop off might well vary,and/or be slight. It's about positive transfer (skills are very similar) versus negative transfer(the skill are more in opposition)- applied psychology has long investigated,and the new sports psychologists are hot on this. And there are issues interference between differnt shooting disciplines (even within say 'McQeens/Bench Rest'-or 'skeet/olympic trap"-some of the skills demands differ) -More simply,less practice within the same disciplne be confounding things-doing something else isn't interfering directly,it's reducing practice time.Don't overlook age changes ,too,over the years...' Body 'rust' happens! What would be. Informative,is how shooters performance changes when they just shoot less often at the same shooting discipline,but don't do anything else instead...(getting 'rusty' isn't quite right,but will do). This is fairly typical-used to shoot (clays) once a week,but now shoot rifle also,and shoot alternate weeks (clay and rifle)...both factors are confounded...there is less clay practice but also possible new interference (negative transfer) from the rifle shooting. As Monty surmises, there are likely to be individual differences to 'susceptibility' to either rust or interference. There may be some positive aspects of skills transfer,but unlikley to be as good as focussed practice in one disipline. Big Al puts the general position well....basics come fairly easy, without much maintenance, high performance levels need very much more quality input both to develop,and maintain. But what,you ask,about luck,etc.....well,here's what Gary Player said when he was asked about the role of luck in his golf career : "Yes,I have definitely noticed that the more I practice,the luckier I get." Enjoy. gbal
  4. ""The most accurate BEST LONDON bolt action rifle ever produced".......the phrase "BEST LONDON" is a meaningful one (implying the bespoke upper market (possibly even 'gentleman's'rifle,though that is too non PC really) and means ...as made by the likes of Purdey,Holland,,and such top rank (expensive) makers/retailers in London (perhaps Rigby too?) Price then is in context,and used to be given in guineas...still be 'expensive' ,of course. We are not really comparing an H&H royal s/s 12 guage to a Hatsan pump action.Only the former would be a clear 'London best 'gun,whichever others might consider 'better' by some other criterion (though not 'quality'). Horses for courses. It will probably be supplied in a travel AImbox,in leather and brass,and not cammo. Bradley b/a s are probably good,but maybe a different market? Don't worry Les,I doubt that it will be an F class contender, nor that a new "London Best" class will be initiated at Diggle, or even Bisley.
  5. Ralph,your 'doubts' about the cheap clone are understandable for the 308 application-you could it and see,but there is some risk. Cheaper clones vary,no-one ever thinks they are the equal,or better...over time. Harris are good,and durable. "Better ' gets a bit subjective-users talk about 'loading the bipod" and so on,and that can vary. The 'Atlas" bipods follow the generic Harris 'style' and are both well regarded-very well,by most-and more expensive (2,or 3 times £)-it seems a try and see,really but few criticise the Atlas series,except as they do for Harris-doesn't quite suit them ('Quite" is important here- both can be excellent,it's ultimate fine tuning...). Then you are into Fclass level different designs-ie not spring tension,but variably heavier -the Evolutions,Mystics,Sinclairs and so on-all bipods. In my experience,the Evo is ok,the Seb co axial is superb, light and co-ax joystick control that works,and the solidest,maybe, is the canadian Rempel bipod,beautifully engineered,heavy. All these are getting expensive-a used Seb joypod at £300 might be snapped up,a Rempel...well,be patient...not many about. Weight comes in-Rempel compromises eg F class limits,Seb Co-ax does not...and there are just 'real/subjective ' differences-Rempel,eg.has 'ski feet' which slide-perhaps the opposite to loading/spikes into the ground-fine on a solid bench etc... Horses for courses,jockeys and investment!. When I'm shooting a carry weight varminter-would something better than Harris really be as good 'in the field"? (No) When shooting off a bench,what beats the Rempel....errr....emm..the Farley Co ax-20+lb front rest-the impressive Seb co-ax bipod isn't quite as steady (what is-the Seb heavy BR models!),and what's the elegant,does it all ,lightish weight, very good-that would be the Seb co-ax bipod (but these don't fold up along your barrel). I'm not selling all/any of my Harrises-they are pretty good,and I'd not personally risk £35-40 on a cheap copy....the swivel ones are best...2,20,40 years down the line-that still holds-I think I'd love the Atlas too- but if only one ever,for everything-and not field carry ,the excellent co axial Seb (and a Harris,please for field use.) Hope this helps-if it seems complex,well-so are the variable shooting disciplines etc,and new stuff keeps coming...for £80-100 Harris is on it's own (I've had mine 50years) gbal
  6. 6.5 Creedmoor

    If you wish to shoot informally/for fun at 1000y with the 6.5 CReedmoor, fine-a barrel longer than 24/26 inches might offer little positive,and some inconvenience (and note Big Al's smithing point). If you are a bit more serious and want to shoot reasonably competitively at 1000y with your rifle,then we can be a bit more specific. There are three main issues: !) the intrinsic precision of the rifle (varies by cartridge,and by individual barrel) 2) intrinsic precision of the ammo (eg vertical dispersion sub 1/2 moa at 1000y ) 3) ballistic desiderata of the cartridfge,which specified below. Though now outclassed by the hotter 7mms,the 6.5x284 cartridge enjoyed a good run of competitive success,so let's use that ,as it's also a 6.5 calibre: wind drift is acknowledged the major consideration for good 1000y cartridges,so the 'benchmark specs' of the 6.5x284 give 70" drift in a 10 mph wind,with the popular 142 SMK bullet,at 2950 MV,and BC .565 (G1-and in the 2000-2850 velocity range- remaining velocity at 1000y will be more like 1300fps). So,those specs are what any 6,5 cartridge has to produce to achieve parity with the no longer top cartridge,but still a decent one. The specific combination can vary a bit-eg a better BC can compensate for a corresponding lower MV. The final important component/factor is 'accuracy', as BIg Al also raises. I'd prefer 'intrinsic precision' of the carridge design (keeping accuracy for what the shooter contributes with his firing solution and skill,unless ease of shooting fast is added-as indeed it currently often is-hence the 6mm Dasher class) but the concept is clear enough-some cartridges are just a tad better in keeping small groups than others (6PPC at 100y is the clearest example). There may not be a lot in it for the various 6.5 1000y contenders,that meet the above BC/MV criteria,and clear data ,like consistent competition successes at 1000y,over the other contenders,don't yet exist,especially under UK conditions.Add in all the other factors,including individual barrel variation-unknowable in advance between the premium makes. SImples-anything less ballistically efficient than a 142 g BC .565 @2950 MV package in 6.5 calibre,will reduce competitiveness at 1000y- Those specs will not give parity with the best current 7mms (or Dashers etc on benign days-maybe).But for a 6.5,that's where competitiveness begins. gbal
  7. 223 Brass

    Your question is a sensible one-the price differential can be substantial-with brass by Lapua and Norma considerably more than others(sometimes more than 50%)though it varies by specific carridge too-probably a volume demand factor(223 being less expensive,comparatively,as is 308 for example).New nich cartridges usually need rather expensive brass,with limited suppliers .Lapua 308 with Palma small rifle primers has a premium-but it has some advantages. Two main reasons for volume cartridge brass being more expensive initially (ie per 100 new cases) in the more popular cartridges (taking Lapua as one of the best examples) is that the quality control is just better,and the brass needs less prep (eg Lapua primer flash holes seldom neeed deburring-just mede better),and overall more uniform (eg in capacity/weight). Secondly,the quality of the brass seems to give more reloads.That can reduce/remove/reverse the initial cost compared to cheaper,less durable brass. Will a (Lapua) case shoot more accurately at 300y? Well,depends how 'accurate' you need-but generally not significantly measureably (data might be a little selective-very few 100y Bench Rest shooters use cheap brass (but here 1/10 inch. 5 shot group increase is bad news)-that won't be noticed by a varminter. Assuming the brass-of any make-is equally well prepped,and ammo loaded with same consistency and components,I have not found any consistent precision advantage at short range,though (Lapua) is always very good. AT very long range (1000y) it gets difficult to measure very small differnces-because these tend to be swamped by major factors like wind drift.The advantages though of (Lapua) brass hold,in giving more reloads before primer pockets go with stout loads. SO,bottom line,for the short range shooter varminting or club level,brass make will be a small component in consistent shooting,absolutely and in compariso to eg powder load and bullet (Bergers cost more/shoot better for most users).IF cost seems an issue,then there isn't much in it if you reload-the superior/pricier(lapua) brass will last longer and about even out-maybe better,especially with non max loads. There will be plenty who find equal performance from a wide range of brass-as above. Differences-if any-in precision are rather elusive, but there won't be many who find the (Lapua) grades of brass inferior in any way (including brass lifetime costs,usually). Bear in mind too,what your shooting needs- if your targets are more than 1 moa,brass will be a very minor issue-rifle too will contribute more to performance-or detract from it-the very best components need a corresponding premium rifle to give of their best-ditto ammunition. If you cannot get (Lapua) grade brass,well-the choice is removed.I'd not worry too much (unless you are a niche expert shooter in competition-but then you'd have chosen your cartridge option bearing in mind premium brass supply). The brass doesn't miss anything like as much as other components/factors do. :-) gbal
  8. Right,as advised. Don't mess about with other makes if Eley is good,but try a grade up-at some point the rifle will be the limiter,as much as the ammo.Individual rifles can perform OK with otherewise mediocre ammo,but the good stuff (like up grade Eley) tends to do well in most. Try other than Eley/Lapua,if you must,but be prepared for disapointment more often than not. There really is a lot of 22rf-but to differnt quality....why not check on some overall review,and look what comes out at the top most often and is never out of the top spots...oh,that would be Eley and Lapua! Google. '22 lr rifke ammo testing" .Remember RFD's may 'push' the brands they stock-best resusted,unless you want to save a £ or two,and can accept corresponding poorer performance. Ditto 'High Velocity" etc and any low velocity ammo for target shooting.40G about 1180 fps is the sweet spot-with good quality control by.....well,you know now from your own shooting...get plenty and enjoy... gbal
  9. Rempel Adapter

    I have a Rempel stock adapter for stocks wihout an Anschutz rail,new and never fitted/used. It has to be let into the stock. gbal
  10. Dorg,perhaps you could confirm/clarify the (estimated?how?) spread of your 5 shots at 1000y. VInce and Big Al-current uK record holdes-have given worldrecordsize groups for 1000y BR-US are generally just a little smaller than uk (they have been shooting longer,definitely shoot far more groups,and maybe have rather more benign condition days-but we are in the +/- inch ball park differences-and add in Heavy gun and light gun similar differnces too-let alone any 10 shot groups,which will be a little bigger. . Group size is measured as distance between the outer edges of the most separated 2 shots minus calibre (or centre to centre of those shots-same). Generally vertical spread is less than horozontal spread,as the former is mainly a function of consistent cartridge velocity (relatively within reloaders control) and horizontal is largely a function of wind (much less accurately within shooters judgement,on average,and range-distance and location-related.) Whatever the group,it may be a one off caused by the wind (which blows then in ,as well as out-though seldom equally).So consistent small groups become the criterion really,rather than just a one off....pleasing though that might at first seem to be... I note you fired some 250 shots,wirhout equipment failure. That's 50 5 shot groups-though not all would be 5 shot,nor with the better loads under development. BUt you may have some. Anecdotal data from other groups that would give some context to the 'best' group. Ad of course,the rifle should be considered-where there is a 'factory class' performance is considerably down on the custom rifles (1/2 moa would be pretty good for a factory rifle,and might well double or triple with increasingly tricky wind.The customs/experienced shooters groups will deterirate too,but less. Last point to consider-what kind of feedback is available-electronic is shot by shot,BR competition is not-so shots cannot be 'corrected'.One last thought-grouping is one criterion ( rig precision and shooter/reloader skill) but equivalent group size and bull centered is another ( harder without feed back?). Accurate Shooter bulletin carries reports/photos of impressive targets shot in mainly US competitions. UK comp results are often on this forum. Always worth a peek at the top performers other (non recrdsize) targets-usually pretty consistent-suggesting luck is an implausible explanation for their best group-they tend to be consistently pretty good,relay to relay. gbal
  11. Walter Mitty Foxing.

    Gunner,most of us will recall the 22rf box "Dangeous within a mile",though some US brands now say within 1.5 miles. Maybe young Sparky saw this. 22rf 40g @1200 fps fired at optimum elevation with trajectory zenith at 1300 feet,wil return to level earth at 2300y (1.3 miles).Maybe a tail wind would increase that a bit, but it would not increase terminal energy (under 5 ft lb) IF there were a fox ,with a flea, just at the impact point,then the flea would be in mortal danger (if a bit unlucky).The fox(and flea) might well be moving. Shooting a (moving ) flea at 1.5 miles is some shot.Finding the dead flea for confirmation would be difficult,of course. :-) gbal
  12. 70 gn 6mm bullets

    Tony, In 6mm,I have a box of G&C 68g,a box of Berger 74g, Berger 68 (moly and naked); and Speer TNT 70g if you'd like to try any? gbal
  13. The old Rocky Mountain men were reputed to come down to civilisation in the spring,for a bath........whether they needed one or not. :-) gbal
  14. "Something that is asserted without evidence,can be dismissed without evidence"(quoted by Gluv) is "Hitchin's Razor"-a useful debating tool ( and occasionally useful some forums....). It is saying that only evidence can decide the truth-but of course does not in itself give any for/against the assertion. Bradders and Big Al make much the same good. point-is there any really sound evidence? Cleaning a rifle that continues to shoot well (plenty anecdotal,but reasonable evidence) suggests cleaning does no harm Not cleaning a rifle that continues to shoot as it did when new (!1/2-2 moa at 100y,worse further out) would indicate that there are other more serious causes of such modest performance. Bench Rest shooting is very sensitive to very small precision changes (second decimal place moa stuff) that most other shooters would not notice.Most BR shooters clean between 5-8 shot relays. Some shooters never really collect good data on their rifle-a hit is a hit...Fig 11s go down....big,not too distant gongs are hit...ok....cleaned or not...not very helpful as the targets are too big to give good accuracy change data. Maybe cleaning is very sensible,even essential,on premium barrels used for precision shooting (BR ) way beyond average club/varminter (200y fox?)/stalker levels of precision. Done well,it is very unlikely to make barrels shoot worse.Not done thoroughly,it may not be noticed unless high precision is essential. Barrels are very likely to be differentially vulnerable too-the 'factorygrade' maybe have other imperfections which mitigate lack of cleaning (they will seldom ever shoot like premium barrels,cleaned or not.) Cleanliness being allegedly next to godliness (Hitch that if you will) and being an atheist, I clean,as it probably does some good,and no harm. I also have a cleaned 5000+ round 243 Sako,firecracked from throat on out...that shoots quite well (but is no longer the 1/3 moa it once was,and if you didn't know how good it was,it's just fine.Shot out-yes by bore condition;still a pleasure to shoot-yes ). A 7x57 was never cleaned by two generations of keeper-still a 11/4 moa shooter,Norma ammo.-don't know if it was ever better (no data). It's partly about 'horses for courses' and what you need (not what you think you need).Cleaning too-can't see copper and carbon build up as an improvement, but can't really ' 'prove' it i(but not risking no cleaning of good shooting barrels,especially premium ones.) "Fit for purpose" may well allow quite some tolerance in the cleaning/not exchange of assertions.I doubt that it is has exactly the same pros and cons for every shooter/rifle /purpose combo,but the evidence is rather anecdotal. There is excellent data on the cost of a replacement barrel,however,and it's more than the cost of cleaning. :-) gbal
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