I bought two new 7 round 'extended' magazines for my Ruger LCP. Started loading them up. First one - 7 rounds - a little stiff, but not too bad. The second one, Cheese and Rice! Just about get 6 in, with a struggle. Off I go and fetch my mag loader, load 6, unload 6, load 6, unload 6 - that 7th round was apparently never going to fit. I disassembled the mag to make sure nothing was binding on the tube - nothing was - can you spot my problem?