Iam venturing into new territory here and seekin an opinion from those who have a deeper knowledge than me. I got a bunch of once fired brass, mixed headstamps, so after sizing/decapping cleaning and separating by headstamp into different bags, I started to trim the brass and what I have found puzzles me a bit. Trim length for the .223 is 1.750, the PMC brass all needed to be trimmed no problem, pretty much all the Remington brass was good, but when I went to the Federal brass, when I started to mic it before it hit the trimmer, it was mic'n at anywhere between 1.740-749. I even had a few that were at 1.735. Out of that bag of 300-400 rounds only about 25 fell into specs. Now asking around from others with level of experience say, lucky you! You get alot of shots before you gotta trim it. I have never had brass to short from the getgo. Anyone know if this short brass is ok to load. Other opinions would be great, thanks.