My buddy came to me with his 7mm as he was having diffuculty chambering some handloads he had. At first I figured the brass was incorrectly sized and needed to be trimmed. I pulled all the bullets and have found the brass range from 2.456" to 2.498". I am confused as to what to do next? Most of the brass falls below the minimum trim to length of 2.49" but I feel the low end is alot short. Would it be best to just start over from the start with all the same brass? I am also confused as to what in the world would cause the bolt so much diffuculty closing if the brass is short, any insight is much appreicated. Thanks.