12-14-2020, 10:04 PM
I don't have a 300 HAM'R but I do have a 7.62X40WT also made by Wilson Combat. Yup, the 300 HAM'R will require mags for the 300BLK or modified .223 Rem/5.56 NATO mags. I have some of both... the PMAGs & modified Lancer mags sold by WC. The modification is the milling down of the first ribs at the front of the mag to compensate for the wider 30 cal bullets.
From my experience with these mags, the feed ramps on my Wilson Combat barrel & various bullets I've used for reloads, it really functions quite well. I've had no issues at all feeding ammo from those mags. I've even used blunt, round nosed 110gr 30 Carbine bullets & they functioned perfectly. I thought they might hang up at the feed ramps but they don't. However, I must add YMMV. They work in my rifle... I can't say they will in all rifles.
From my experience with these mags, the feed ramps on my Wilson Combat barrel & various bullets I've used for reloads, it really functions quite well. I've had no issues at all feeding ammo from those mags. I've even used blunt, round nosed 110gr 30 Carbine bullets & they functioned perfectly. I thought they might hang up at the feed ramps but they don't. However, I must add YMMV. They work in my rifle... I can't say they will in all rifles.
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