7 round mag mod for the mini howa

[tommyguns]

i just tweaked one of the mags i have for the mini howa in 6.5 Grendel. it does indeed now hold 7. and feeds fine. but in my mini howa 7.62x39 it won't feed anymore, the 7.72x39 rounds nose dive. so..... if you make the magazine mod, it's changes the mag so it feeds for Grendel only, which if that's all you have, no issues. at least that's what i'm seeing with my mag mod. ymmv.
-tdbru

How did you do it?