Wedgy
Well-Known Member
- Joined
- Feb 9, 2013
- Messages
- 3,275
. At 500 yards with the velocity slowed significantly and the rotation slowed slightly the bullet maybe doing one rotation every 5".
I think you mean the bullet slowed rotation but slower is going to be one rotation every 9 or 10 inches, 1:5" is faster.The bullet rpm does not slow as fast as the velocity. to put it in simple terms with a 1:8 twist barrel has the bullet leaving the barrel making one rotation every 8". At 500 yards with the velocity slowed significantly and the rotation slowed slightly the bullet maybe doing one rotation every 5".
BTW this was a Berger 6.5 140 grain at 3,018 fps hitting a ~150 lb deer 550 yards broadside lower chest(12 inches max) ribs, heart, lungs, no spine contact, found in the offside hide, big lump in the skin, I thought it was a tick at first. I have had these exit thru an elk on the same shot similar distance but this one totally came apart
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