Quote:
Originally posted by Bart B.:
I doubt the cannelured .30-30 bullets are for crimped case mouths to have a better grip on bullets to survive recoil.
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....added to the recoil is the force on the bullet as it is loaded thru the loading gate and the force of the magazine spring when the cartridges are in the tube. All or any of these can lead to bullet set-back, even if you have your doubts. This is why every major manufacturer that produces bullets for 30-30s, .32 Specials and other firearms with tubular mags put a cannelure on their bullets. The cause of the set back is not as important as using the proper bullet, and for the 30-30 with a tubular mag, one needs to use a flat or the new plastic tipped bullets that have a cannelure for crimping. These are the major differences from standard .308 bullets.