Jim in Wisconsin
40 Cal
- Joined
- Jun 9, 2021
- Messages
- 282
- Reaction score
- 383
If nothing else, doing a little arithmetic once in a while is good for the old brain cells (however many are left).
Negating that is supposedly one of the reasons for paper patching bullets.The rifling leaves ridges on the bullet and these ridges react to the media around them.
Your ballistic facts are right but what impresses me is how brave you are with spousal speak ! I'd be on rolling pin alert by now!Negating that is supposedly one of the reasons for paper patching bullets.
This is like when you hear that the lifespan of a centerfire barrel is only 3 seconds, because for the entire life of your rifle if you reach the point of accuracy loss, the bore has only had a bullet going down the rifling for a total of 3 seconds total
I'm not too worried about the heat of blackpowder and friction from pure lead balls or bullets wearing out the bores of any of my rifles within my lifetime. Lock parts giving out and protecting the crown from rod wear are far bigger concerns.In our game the bores will last for decades if loaded and cleaned properly although I have read of patch shooting guns shooting smooth and accuracy deteriorating from a glaze forming. My guess is this is actually carbon fouling which is hard to see looking down bore.
Few if any of us who shoot for fun or casually in matches will ever wear a barrel out in anything or probably even have a mechanical failure in a lockHarry Pope the famous barrel maker of early last century said his match rifle , a .33 cal on a 32-40 case had over 100,000 rounds down it and was still to accurate to re-barrel. These were lead bullets with low pressure Shutzen loads and breech seated. The powder was semi-smokeless.
wager you lost a few zeros in the rotationMy match unmentionable was 1 in 7, do the math on that at 3,000 FPS, BTW at that twist the bullet turns about 3,000 times in theory on it's way to a 600 yard target.
My match unmentionable was 1 in 7, do the math on that at 3,000 FPS, BTW at that twist the bullet turns about 3,000 times in theory on it's way to a 600 yard target.
What’s the wager? By my calculations 600 yards equals 21,600”. Divided by 7 equals 3086. So how many bullet revolutions over 600 yards if the bullet completes one revolution every 7” could possibly occur. If @Whitworth lost a few zeros that would mean the bullet continued to dramatically increase it’s rotation rate, or have I missed something? Would love to see @nhmoose math.wager you lost a few zeros in the rotation
Me too, and this is not my post.i think im gonna need popcorn for this one
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