I have sgm mags that fail to load the first round when loaded with 2 3/4 rem 9 pellet buck and 2 3/4win PDX12 rounds. The mag when loaded with ten rounds of buck or pdx12, the rounds drive into the bottom of the barrel. When down graded to 8rds, the first round chambers. Now when I load the mags with 10 rounds of Fed 7 1/2 100 pack round the first round chambers and all go off 100% no ftf. This is what I noticed.
Factory mag loaded buck
sgm 10rds loaded buck
sgm 8rds loaded buck
sgm 10rd loaded bird shot
sgm buck FTF
sgm pdx12 FTF
I contacted sgm and was told it's my gun and t