I have a 22LR Magnum made by Savage, it is a model 65M I believe. I always used it for groundhogs and other varmints and it has been a great gun. Problem is I haven't used it in several years and when i took it to the range a few days ago, the magazine doesn't seem to fit right and it often won't chamber the round correctly. I looked on-line for a new magazine at Midway USA but they are back ordered. Also, this mag only holds 5 rounds, I did see a larger one but I can't tell if it is for the longer LR Magnums or just the regular LR's. Any suggestions?