Thread: Study on Bullet seating force with annealing vs not annealing

Very informative study, a LOT of hard work went into that and it deserves to be read, not just for the information it yielded.

Take home message for me is anneal before every resize, not every 5th. They showed very clearly that work hardening of the neck happens mainly from the first shot -- not gradually over five or more shots!

Also, I always thought annealing/sizing was all about what grip the case had on the bullet and the effect this has on the pressure build up etc. But this study also had some interesting pictures on effects on the cartridge neck gas seal, obviously a big effect.

Their study used an induction annealer (nice bit of kit!) and it would be interesting to see a study on the differences in effect between that and candle annealing to enable every gear junkie to properly justify such a purchase to the accountant.