I'm just starting out reloading and am processing my first batch of once fired brass.
Brass is Remington and Federal (both high nickel/chrome looking?)
My question, my once fired brass measures between 2.573 and 2.595. The Speer book says trim length to 2.620, and Barnes book says trim length to 2.620 max, 2.610 min. If this is the case, why is my brass so short from the getgo. I assume it will grow over time and shooting...but that much? Am I missing something here? Any insight and advise is appreciated.