Thread: Twist rate vs velocity vs bc

I remember Greg showing me a recovered projectile that you could clearly see had slipped in the rifleing. the grooves in the projectile from the lands were twice the width of the others.
I don't remember the details tho maybe Greg does?

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Originally Posted by veitnamcam

I remember Greg showing me a recovered projectile that you could clearly see had slipped in the rifleing. the grooves in the projectile from the lands were twice the width of the others.
I don't remember the details tho maybe Greg does?

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They were early Lehigh .416, 435 grain brass projectiles, the lack of diameter & engraving most likely caused this coupled with the 1-12 twist & 3200 fps.

They would slide in the bore getting the brass all through it.......some less than others, I have very few without "wide" grooves in them.

Very pretty to look at, not so good for ES, surprisingly at close range, less than 1000, accuracy didn't really suffer.

I never really got to the bottom of it & those projectiles were discontinued.

The damage on the recovered solid copper & brass projectiles has to be seen to be believed, the amount of force required to deform them is mind boggling.

Moved on to the .375s, they are miles ahead of the 416 now there is decent projectiles available, which was what was holding them back 7 or so years ago when I started with the 416B.