Thread: Wannabe reloader - gear advice please

ABC's of reloading is here: http://marvinstuart.com/firearm/Manu...4%20Reduce.pdf

For crimping, there are three styles.

Roll crimp
Taper crimp
Factory crimp

The first two are mostly for pistol/straight wall cases, intended to stop the bullet from backing into the case in a tubular magazine (lever action). The 'factory crimp' is a trademarked Lee Precision item but it is essentially a collet which compresses the bullet slightly and improve accuracy and Extreme Spread and Standard Deviation. Can work wonders on some setups but either no change or very occasionally make worse, usually depends on bullet construction and powder levels (compressed loads).

Some good articles: https://www.sierrabullets.com/reload-basics/crimping/

https://blog.westernpowders.com/2015...ridge-success/