[Errant]

Reloaded cartridges are perfectly fire formed to the chamber they were fired from.

You should resize the cases if they are to be used in other than a bolt action rifle. You are right though, it makes a big difference in accuracy.

[Ammo Republic 15]

Thanks for further clarification. Yes, I always do when reloading for semi auto but 9 times out of 10 I’m reloading for bolt action rifles Remington 700, Ruger M77 etc...