My NH 10 #3 frame was completely redone by the DelGrego shop several years ago, restocked (good dimensions) and colored; and the twist barrels were cut off and steel barrels were sleeved in and chambered at 3&1/2" (probably by the Lefever shop). I have shot 3#1/2" steel 12ga through Gaugemates out of it; the Black Cloud wad will just pass through the choke. Patterns well and no apparant harm.
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