I've put 2 lugs on a 15/16, 12"long, GM, oct, barrel. The lugs are made of 0.04" folded brass and are 10mm long (about 3/8"). Would it be safe on the next barrel to make the lugs 5mm long(about 3/16")? This would give me better room to mount the front rr thimble.
Best regards
Rolfkt