ok I am new to reloading and have been working on my first reloads for the 6.5-280 Rcbs that I inherited. I only got the gun no other information. I bought the Frankford arsenal Coal device and measured a Coal of 3.73. Well with the .280 case length and the 130 gr accubond I can only get the overall length to 3.53 and the bullet is only seated .215 in the neck. I measured the neck tension of .002. Well I went to the range to fire form yesterday which was going well until the last round even at .2" off the lands. I put the last round in and then decided not to shoot for some reason. When I ejected the round powder flew out and the bullet was still in the throat. I had to use a cleaning rod to clear the bullet. I am not sure what to make of this. Neck tension seems fine. I should be off the lands. I inserted another case at same length with no issue. Any suggestions?