QCcoueshunter Report post Posted June 5, 2012 i am new to reloading i started resizing some of my old brass from factory ammunition but have not yet reloaded any yet. my question is on the hornady cases i have the length of the case is on average .010 shorter than the trim length specified in my manuals is it ok to reload these cases or could it create pressure or any other problems? i am reloading for a .300 win mag. Share this post Link to post Share on other sites
firstcoueswas80 Report post Posted June 5, 2012 Shorter, within reason is fine. Longer is when you will get the main issues. I typically will trim a tad shorter than what the book recommends. Share this post Link to post Share on other sites
elpepe25 Report post Posted June 6, 2012 i trim to .010 shy of maximum chamber length. heres how to find maximum chamber length + a lot of other good info http://www.varmintal.com/arelo.htm#Chamber_Length Share this post Link to post Share on other sites
