When reloading a 45/70 case with 405gr LRNFP is a tapered crimp required?
Thanks for any help you can provide.
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February 22, 2012, 04:03 PM
If it's for a lever-action tube magazine, a heavy Roll-Crimp is very much required.
If it's for a single-shot rifle, just a light taper-crimp or roll-crimp, or even no crimp at all is O.K..
February 22, 2012, 07:12 PM
In a 45-70 (at least my 45-70 Marlin Guide Gun) the type of crimp can make a significant difference in accuracy. I switched from a roll crimp to a snug taper crimp years ago. No problems in the tubular magazine and my loads are pretty stout. I shoot the Hornady 350 grain RN bullets over a healthy charge of H-4895. The caps in the pic below were 100 yards out. I could not do this with roll crimp ammo. Can you guess which ones were the 45-70?