I want/need a magazine for my Marlin 795 with more than 10 round capacity -- at least 13, preferably 15 rounds (this is for the "Redcoat" target at Project Appleseed -- saving 3-5 seconds on the reload gives that much better chance of "cleaning" the target, and the same mag will also work with the original 10 round for the 2+8 strings). I've heard nothing but bad about the one brand of available after market magazines, and even the 10 round mags are currently hard to find, but I can get the 7 round capacity without much difficulty. It looks to me as if I could buy two of those, cut one below the feed lips, sand or wire brush the plating off, and braze them together with a reinforcing band, then make an adapter to butt the two springs and reassemble with one follower, both springs, and one floor plate to get a 14-15 round capacity (and no, I don't live in a state where 15 round magazines are illegal -- at least not yet).
Anyone tried this kind of modification on a pistol-type magazine (which is essentially what this rifle uses)? Any special pitfalls to watch for other than the obvious need to get the two parts aligned correctly?