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Unread 03-29-2017, 08:48 PM   #21
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James L. Martin
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I also vote to leave the choke the way it is, change loads instead, high end trap loads like AA will tighten things up. Jug chokes make the barrel wall to thin unless you have very thick barrels.
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Unread 08-07-2017, 10:09 AM   #22
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I've jug choked a couple of guns and it does indeed work very well. Old V.M. Starr from the muzzle loading era wrote a small article on how to do it - he had won many turkey shoots with his muzzle loader over modern guns. His method was to remove the metal starting 8 inches back for 6 inches and leaving the last 2 inches alone. This allowed the shot enough time to expand before coming back to bore size. It also allowed loading a muzzle loading shotgun without trying to fit a bore size wad in a smaller hole. In a 10 or 12ga IC is .010 constriction, in a 16ga .007, and a 20ga .006. So we may need a bit more in the 8ga, say .013. You would have to remove .0065 per side, and if one thinks that would make a barrel unsafe then don't do it. Maybe if your barrels are that thin to start with you shouldn't be shooting it in the first place - but that's JMHO. If you want to do it yourself you'll first need a inside mike to measure inside barrel diameter and a adjustable reamer that adjusts from the end by turning in a screw, not one by turning two nuts. Then you'll have to attach a long " T" handle to the reamer to reach in from the breech. You'll also have to make up a tool to reach in from the muzzle to adjust the reamer. The reamer is put in place, then it's tightened against the bore, turned a couple of times, loosened, removed and cleaned, and do the process all over again. It can only be tightened a thou or two each time so it becomes fairly time consuming. And you have to go in and check with the mic every other time or so. Unless you're shooting a British gun or one that's been honed many times, most good old American made SxS's have more than enough wall to remove 7 or .008 from a side. Most smiths aren't going to invest $120 for a reamer to do one or two guns. Does it work - yes. Is it safe - yes. Will you have to do it yourself - probably. Good luck.
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