Good morning and thanks in advance for your help. I just purchased a 93 BLR short action in .308. I love this rifle...I can shoot 1 inch groups at 125 yards with the thing. Amazing quality. It came with one magazine (used rifle) marked .243/.308. The .308 mag fit very well. I could not find a .308 mag so I purchased a .243 mag as a spare. The .243 is VERY tight but is will seat and cycle ammo. Any modification ideas to loosen this thing up a tad? Thanks