Thread: Substituting projectiles

It was proposed that case length may grow just by neck sizing, or by neck sizing using a full length die and in a way that was so significant that it may make a case over length in one neck sizing operation and potentialy be dangerous when swapping projectiles on military ammunition.

However, I can reliably report that neck sizing does not significantly increase case length like full length sizing may; certainly not enough to make a military case over length in the operation that we are discussing here. If it does, you are not neck sizing. In practice, it's not an issue. (And if it was, we can just trim them right? We are disassembling ammunition and reassembling it with a different bullet, we can do what we want. )