Popsbengo

Badger, your sett's getting too damp 😁

1 hour ago, One on top of two said:

Hmmm Magnus effect  Although pretty insignificant on a bullets flight path it’s still a very interesting phenomenon.  🤔 

stop it FFS .

bend it like Beckham 😁

7 minutes ago, meles meles said:

Beggin' pardon for pedantry, pops, but gravity is affecting the bullet all the time. Even when it's in the barrel too. 

well yes, but you know what I mean Badger !  Surely the bullet is falling towards the centre of the earth as it leaves the muzzle so there's a compound vector

"....So the flight time is still your theoretical 2secs, the fact is that, the bullet is only being effected by gravity for 0.866% of the flight, which due to the inclined or declined angle gives a ballistic advantage, the direct result of which is the need to allow for less drop for the given distance. "

How's that? surely the bullet is under gravitational effects immediately it leaves the barrel 

My thoughts:   .223 cases are small and comparatively flimsy so pulling and reloading without sizing most probably has made a set of variable brass.  A loaded bullet will have expanded the neck a touch, so pulling and reloading without reforming the neck tension could be an issue.  Also the act of pulling could have distorted the case a tiny amount, again, not reformed by sizing in a die.

I'd write the batch off to experience and would expect the brass to return to a good condition after the next sizing op.

6 hours ago, KABOOM said:

Poor behavior like criminal activity is predicate of a lack of morals in the wrong doer.

Morals ? For sure many criminals are immoral and deserve retribution but what about other factors like extreme poverty, or desperation, or social pressure or mental illness?

eg.  I'm not sure me shooting dead a desperate person for stealing some food would be a moral act on my behalf.

some cases are bigger than others at particular points 😁

It also would allow an understanding of the amount the case 'swells' and is reformed by sizing.  What that means in case life I do not (yet) know..

7 minutes ago, Ronin said:

The die is simply a cone shape and cylinder shape resizing a cone shape and cylinder shape -  measuring various increments of the cone isn’t going to assist you unless you have a die that EXACTLY replicated the chamber less .003” overall to allow sizing over almost the entire area of the case (from web upwards of a vertical case )

Measuring diameters at various points  just provides you with more perceived problems to answer unnecessarily  

Size the case sufficiently to allow the bolt to close as per Alex Wheelers video 

I don’t follow the “I have the solution, now what was the problem” ethos 

Fair point - although I think it's interesting to know a bit more about what's happening:  wouldn't buy a gauge but 15 mins with a scrap piece of aluminium in the lathe costs me nowt.

When I had a problem with 'once fired brass' that I purchased, it was not clear to me if it was tight because of length or diameter.  Nice to know what's what.

5 minutes ago, brown dog said:

Quite amused by the start there, then you lost me..... but the start chimed with a chat I was having about our parliament of never-had-a-real-job-but-enjoyed-debating-society-at-uni politicians. A pal of mine, an NHS consultant in London, was giving his thoughts on the Covid decision-making capacity of the PM & Cabinet:

""People with science degrees should run the world.

People with arts degrees should just be allowed to paint it.

 And they certainly shouldn't be responsible for making any fuqking  decisions."



 

 

Not always the case.  Merkel has a  degree in quantum chemistry.  She bullied Europe into allowing in millions of economic refugees to come to Germany, France and Sweden from Africa and Middle East with untold consequences for European culture.  I don't think that demonstrated good judgement.   She did demonstrate good judgement regarding CV19 decision making and saved many lives (or delayed many earlier deaths dependant on how we look at it).  Some you win.....

My conclusion is politics is a messy game with no wholly right or wrong answers.  Politicians are strange creatures, massive egos but often with high ideals.  Many are corrupt in petty and, for some, major matters.  At least we get to choose the least worst (in our personal opinions) - don't know what the answer is beyond carry on messing through?

Nice and simply explained.  It's pretty much what I did to determine what to bump my .338 to. I use his method finding the lands touch point too.

The gauge is useful to help diagnose where the problem might be even if it's something I can't directly solve.

thanks mate, I've just made a 0.20" flat bottomed hole tool. now off to make a 0.50" 

Thanks Big Al, very informative.   Is there any benefit from measuring the case at, say 0.500" too ? Will it held any useful info that's not apparent at 0.200"?

Also is 0.200" about right for a .338 case too please?

I purchased some "once fired" .338 brass and F/L sized in a Redding Type S die only to find the brass was tight as you described.  A Hornady comp die did F/L resize for an acceptable fit in my rifle.  I've found though, that after that initial problem, the Redding die sizes back the same brass fired in my chamber to an acceptable fit.  I'm thinking this is down to the once fired brass having been stretched in a 'slack chamber' (my rifle is a custom CIP standard) and not returning to size fully in the Redding die but the Hornady die being ever so slightly tighter?

12 minutes ago, John MH said:

My Charlie Tarac fits to the rail not the scope.

Is that a new version or a mod you've achieved?

The problem with democracy is all those other fools making laws I don't agree with !   The alternatives are worse.

1 hour ago, Gluv said:

Tacom already have a side offset scope prism as well as the charlie Tarac . You've been beaten to the cake ! 🙂

Gluv🇬🇧

I did wonder, I tried Googling but didn't find anything.  I didn't think I'd be the first as it's a pretty obvious thing to try.  I think another 5 years and we'll have lots of electronic hybrid scopes - seems like a natural evolution.  I see Trijicon already do an advanced ballistics hybrid package (possibly only US military at the mo) - it does ballistic solutions right on the screen.

The only beef I have with the Charlie Tarac is it's a big lump on the scope, it's seems a bugger to set up (as you know) and it's very expensive (but nicely made).  I'm not a fan of those Ivy et-al adjustable rails, too many moving parts, too much opportunity for errors and prone to wear I'd expect.

I expect to be vindicated in a few years 😁  Won't make any brass though..

sure, that's one way!

watching those videos I'm struck by what a compromise it is to have a scope set up for extreme distance - lots of compromises.

I have an idea:  a side-offset scope will allow extreme angles without 'looking' at the barrel, having to lift your head up and to avoid thermal distortion from barrel heat BUT it's not possible to maintain a good solid cheek weld and get a good sight picture.  So, my idea is to 'remote' the eye piece back to the top of the rifle by using a CCD sensor in the scope and a LED display set up in something similar to a red-dot tube (maybe with an eyecup for light).  A high quality scope doing the optics and mechanicals but a simple display (like night vision) to look at in the conventional position.  It seems likely it could be achieved with existing components.

Any thoughts on this?

Intellectual property rights copyright.

5 minutes ago, Ronin said:

A new club, that is  independent may be the way forwards with someone at the helm who has no agenda other than promoting long range shooting in the uk may also be the best way forwards 

Start afresh - UK 2 Mile Shooting Association perhaps ?

 

 

 

You may well be correct but the existing clubs like Gardners and FCSA will also be interested in taking this on - could we end up in internal strife rather than a managed effort for the benefit of all ?  

That (Maximus above) in spite of ready access to guns - not an overly effective deterrent then ?

Firearms law in the UK is a mess, we all know that and agree I think.  The problem is any decent attempt to review and replace the mess could only result in yet more restrictions I believe.

Best it's left well alone. At the moment and for the foreseeable it's highly unlikely the Gov. will have any interest or time to make changes.  Small mercies.

22 minutes ago, Ronin said:

If I were building a rifle for such a competition (and I don’t know what restrictions are for rests etc) but it would be something along the lines of a single shot action in a bench rest or f class stock using quality front test and rear bag 

 

Action would most definitely be a Barnard P 

338 cal is defiantly a contender especially with the better solids achieving BC of 1 or higher 

Gain twist barrel perhaps too 

Ivy mount or Charlie tarac for the scope 

Its entirely possible to shoot a mile with a standard gun - 338 Lm and decent scope will do it and wasn’t being done at Warcop ten years ago

Wind is the issue

 

Two Miles - wind and load quality become massive factors let alone issues with spotter shooter comms and ability to shoot 

+1 on Barnard PL no magazine or ejector.

If you want a good rifle, buy a good rifle: don't waste money on making an ordinary one into a good one - money thrown away IMHO

I think our laws are about right for us.

I think one of the challenges here in the UK is spotting misses in heather or grass - almost impossible if Eskdalemuir is anything to go buy.  The mile plate has at least a gravel bank below so it's possible to shoot at a large white stone and calculate from there.  If you're on for elevation and the wind takes the shot well off it's a guess as to where it's gone most times.  The 2000yd & 2000m plates are almost impossible unless your shots are really close - and I agree with Baldie's comment, it's perfectly possible to get back on in the 3sec between bang and hit - it's just easier if there's a spotter (who can call properly).

It's very expensive but there's nothing quite like the feeling of aiming at a hanging plastic milk bottle (with windage) and hitting it second shot at a mile 😊  Worth the £500 plus travel for the day....

don't tell the wife...

32 minutes ago, Scotch_egg said:

I have never looked up the .416 Barret. A quick google reveals some spectacular ballistics. 
 

 

The .416 Barrett uses a .395 grain solid brass spitzer bullet designed with very low drag. Approximately 204 grains of propellent will propel this .416” dia. bullet at approximately 3,300 fps with 9,551 ft.-lbs. of energy

Very capable but very expensive!