Gunsmithing Magazine Issue

[Tobyboy22]

I'm having trouble with very rough feeding on my match rifle. Initially, I thought it was the mags, but I've tried AICS, AW, and the new ARC mags with same problem. After looking at it closer, it appears to me that the magazine rides up too far (especially when loading into a barricade, on a bag, etc.) and the bolt is actually catching on the feed lips. This is a Bighorn TL3 in a MPA chassis. Has anyone else run into this problem with this combination? Is there a fix? Thanks.

 

[Zermatt Arms]

I'm assuming you are running an AW magwell. If so you can't load an AICS mag the AW cut is wider and will allow it to ride up into the action.
If you run an "unmodified" Magpul mag the magwell will pinch the lips down in the front.
How tight did the AW mags seat?
I do not have any of the ARC mags yet but I have heard good things about them in a BH.

Aaron