Well I'm fairly new to reloading and am having a problem with my .233 loads in my AR15s. My loads will chamber and fire without a problem. However if I chamber a round and then drop the magazine and try to pull back the charging handle to unload, it is stuck and takes force to open (small taps from hammer on handle). Then when I finally get the round out, it has some decent scrathes on the bullet. First I thought it could have been my rifle (YHM Spectre Black Diamond XL) but then I pulled out an unfired Sig 516 I got last week and it did the same thing. I'm using hornady full length dies and loading on a hornady lnl. I also load for 9mm, 45acp, 308, and 300blk. Any thoughts on what I'm doing wrong here??