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About VarmLR

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  1. It doesn't quite work like that but you can just scale accordingly. The results on paper will never be the same since affects of wind, ES, technique etc mean that shooting 1 inch groups at 100 doesn't replicated 2" groups at 200 for that reason. Accuracy tends to open up with distance due to the environmental and external ballistics factors at play. Best you can do is just to scale down the targets as you suggest and use them for practice, or use the standard size and zoom your scope out to get them to half their apparent size compared with your "normal" zoom setting ;-). You can't really simulate 200 or 300m shooting except by shooting 200 or 300m. You can only simulate the target size at 100 as it might appear further out.
  2. OCW Target

    I don't know if it's of any help to anyone but I've developed my own OCW target in A4 printable format. It's here for anyone who wants to use it:
  3. If you're wiling to split the Atlas monopod, I'd be interested in that?
  4. Seating Depth Rule of Thumb

    That's an interesting observation Alex and not one that many people seem to pick up on. Neck tension changes can affect pressure sufficiently to alter velocity/barrel time by quite a margin, and by definition, Al's point regarding harmonics. My simplistic take is that whatever the variable force acting to affect pressure and timing, once we understand this and can work with it, we can find combinations that work for a specific bullet in our barrels. Like Al, I have experimented with seating depths and found at least two accuracy nodes by starting 10 thou off lands and working back to 120 thou off using the same charge. I usually find at least two nodes by keeping seating depth the same and altering charge weight, or fine tuned by getting into the ballpark with one and varying the other. I haven't yet tried altering neck tension other than using a Lee Factory crimp die to aid consistency but have noted when I did that I obtained a slight change in pressure and a lowering of ES, so neck tension is yet another variable to understand and play with. I'm not convinced at all that some hybrid bullet designs address the shortcomings (as I view it) of secant designs. The only ones tried have performed much as if they have been pure secant profiles (ie close to lands seems to work best). Be interesting to see what Brian Litz comes back with.
  5. Seating Depth Rule of Thumb

    Great work there Laurie and a very informative read. Many thanks indeed for taking the time and trouble to post this.
  6. I'm a little confused by the recommendations here to splash out up to £2K for an improvement for a rifle that the OP has said he will only shoot perhaps 4 times a year at 1000 yds and for a "bit of fun" rather than competition. There's no need to spend that sort of money to get reliably to 1000 yds...lets put things into a bit of perspective chaps! A factory barrel, especially the 24 inch Tikka and 26 inch Sabatti options are perfectly good enough to shoot to 1000 and well beyond and shoot reliably to moa at that in the right hands with the right loads (I've done it many times myself but am no top rate match shooter). Granted, you see few Tikkas shooting into the "3's or 4's" at 1000 but I have seen one shot very proficiently into the "5's" and "6's", and that is pretty astonishing for any factory rifle. A Tikka Tac took a national 600m title last year as I understand it too, and with group sizes that would put some custom barreled shooters to shame ;-). If this is all that the OP wishes to do, and the rest of the time is shooting at perhaps between 100 to 600 on other ranges/own land, then any of these factory options will be more than good enough. The Tikka TAC A1 or Sabatti STR would be my personal recommendations as very accurate well made factory rifles, preferably in 6.5mm. If keeping your own rifle chap, then there are a few offers on presently for the GRS Decima Sporter stock £350 to £400. That is way better than the Beserk stock (no front end flex!) and a drop in replacement for your rifle. The Fox scope may be optically and mechanically pretty sound, but you are going to struggle with precision at long range using an 8x, so if funds are very tight, look at a Falcon Menace in FFP instead. Sub £400 and about the best LR scope for the money. Add £350 for the GRS stock and a re-barrel and you're looking just sub £1500. You have to ask yourself whether this is money well spent for shooting 4 times a year to 1000 yards. In your shoes, on reflection, I'd put the money into a much better scope, use the rifle you have and see how you get on. Good glass is rarely money wasted and is transferable to another rifle. If you decide you want to do more or that you would like to invest in something more suitable money-wise, then you'll not do better for around £1700 than a Sabatti or tikka Tac A3. I priced up going the custom build route and was looking at £2,300 for a good but basic build. The alternative as already pointed out is t o save a similar amount £1600 to £1700) and at a later date drop your action into a KRG or GRS stock fitted with a custom barrel. Personally, in your shoes, if only shooting 4 times annually to 1000, I'd stick with what you have and buy decent glass. There's more to shooting LR than the value and technical specs of the rifle. Reading the wind well counts for more than the rifle's ability. Getting to grips with producing small ES reloads is also essential, as is shooting technique. Only when these things are proficient, will a much better rifle outfit be of real benefit. All imho of course.
  7. Learning to adjust a scope.

    If you use Warminster IR2, give me a shout.
  8. 6.5x47 140 eldm

    I'm getting good results from Hornady SST 140's from a 6.5CM using RS62. Some are put off by the cannelure but shouldn't be. They're accurate bullets and a lot cheaper than the 140 ELDs. The alternative in a cheap high BC bullet is the 139 Scenar which also shoots well in 6.5s using RS62. I'm getting good accuracy at around 2650fps from a 24" barrel, and there's another accuracy node at around 2750fps from the same barrel length.
  9. Reloading with Rosie

    Nice to watch a pro at work
  10. Swiss Load Data

    My apologies to the OP for the thread drift; as a fair few have PM'd me asking for a summary of my load data, I've listed it below for information only. Please do not attempt to load to what I have listed as maximum loads without starting low and working up, as per the norms. Please also note that load data for SR/small flash hole brass will NOT be the same as for LR brass. Do not attempt to replicate SR brass loads using LR brass as you'll likely go over-pressure: .308/RS50 24 inch barrel/1:11 TR/CCI200 Large rifle primers/Lapua brass; 4 times fired 175 TMK, COAL 2.800 Start load: 41.5gr Max Load: 45gr (hot, sticky bolt, best avoided) Accuracy nodes: 43.0gr/2600fps/0.219” group@100yds 43.8gr/2640fps/0.542” group@100yds 44.2gr/2666fps/0.36” group @100yds 44.6gr/2677fps/0.31” group@100yds OCW data: Pressure insensitive region: 43.8 to 44.2gr: Low ES 16 (badly prepped brass hence higher than ideal) 6.5CM 24 inch barrel/1:8TR/Murom SR Magnum primers/Lapua SR Once fired brass 139 Scenar, COAL: 2.842 (0.030 to lands) Start load: 41gr Max load: 44.6gr (Compressed) Accuracy node: 44gr/2630fps/ES16/0.25” group @ 100 yds ave (best @ 0.18”) Please note: DO NOT attempt to replicate these loads using Large Rifle primer brass. These loads were developed using Small Rifle/small flash hole Lapua brass (Case capacity 52.5gr H20)
  11. Swiss Load Data

    RS50 is closer to N140, being re-branded TR140, but seems to exhibit a more linear velocity with charge rate closer to max pressures from my own testing, meaning that it doesn't suffer pressure spiking to anything like the same degree. RS62 is closer in burn rate I think to H4350 and to Viht N150 (Hogdon heat of explosion being 3,760 kJ/kg and RS62 being 3750) Varget AFAIK is a higher energy powder than RS50. I have had excellent results from RS50 in .308 and RS62 seems pretty comparible in 6.5CM to H4350 in terms of suitability and accuracy, at least it has been with the bullets that I have tried it with (139 Scenar and 140 SST). It's a little more expensive than Viht but delivers better results than N150 (at least in my rifles).
  12. Swiss Load Data

  13. Swiss Load Data

    If you need load data just send them an email with your cal, barrel length and twist rate, bullet details and powder you want to use. They'll run QL for you and email you with the results. I have a fair bit of data now worked up for .223, .308 and 6.5 calibres with RS50 and RS62. If that might be any use to you (or anyone else) I am happy to provide what data I have with the proviso you start at min load and work up.
  14. Reloading with Rosie

    +1 great resource from long practised guys who know what they're about.
  15. Reloading with Rosie

    +1 Point in question...my two nephews, one 19, the other 20 both were interested in what Stuart had to say (only looking at the last vid) but thought the programme set up was a bit corny and crass. I think we under-estimate our youth if we automatically assume that we need to sell them ideas with sex. That's a reflection on our generation and on us, not on them.

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