doublegunshop.com - home Forums General Discussion DoubleGun BBS @ doublegunshop.com 15 bore percussion double?

Shiva must've been the gent that thought there was only one way to skin a cat...

The fellow I talked with knew of you and remarked that you had built some beautiful guns....

I don't know this "Shiva" fellow but I do know Bobby Collins and he's been going to Friendship Indiana and been a muzzle loading enthusiast since the age of the Dinosaur so I have reason to doubt anything he says about a muzzle loader.

Just to add some fuel to the discussion, my bore gauge is 16" long and the bore was consistent until the choke so unless the barrel was "jugged " for 16"or more it's just regular choke cones.

Of course the barrels could have been over-bored when they were taken apart to leave some choke in there.

With the original bore diameter unmarked I'd want to be sure it had sufficient wall thickness before I shot it.

Right around .050 16" back from the muzzle. Of course this is using OD-ID/2, not the best indicator but all I have at the moment. If I ever get the chance to fire it up I will have it properly checked.

http://www.chadwickreamers.com/model_mb.php

I believe this tool is designed for an operation similar to jug choking. I have had the manufacturer build me the tooling I use for cutting standard chokes and believe if anyone could design a reamer to do the job, they could. I have never cut a jug choke though.

SKB;
That is a piloted expansion reamer but I do not think it is designed for cutting a Jug Choke & certainly not one which could be used with one end of the tube plugged. I presume that all in this discussion does understand the difference between Jug Choking & Back Boring. An ordinary expansion reamer is normally adjusted outside the hole & used in successive steps for enlarging a hole in small increments.
In order to Jug a bbl it is necessary to do the expansion without removing the tool. A normal expansion reamer does not cut efficiently down the length of its flutes, but as it goes forward it cuts on its leading angle.

See SDH I do understand what you are saying, one doesn't just pick up a standard expansion reamer & jug a bbl with it. It does however remain as a "FACT" that enterprising folks have come up with various ways of effectively accomplishing the goal with out the removal of the breeech plug & without a large enough lathe to swing the bbl set in.

Revisiting this topic as today my good friend Tom Hall stopped by a muzzleloading specialty store called Dixon's in PA. He got some FFG and was going to pick me up some cards & wads for this gun but they told him that they recommend against shooting a gun like this, apparently the choke constriction can cause problems with the cards and wads.

Tom, care to chime in?

thanks,

Rob

I have a percussion 12ga with a choked barrel. I fire it with no problems at all. The only way there's a problem is if the cards/wad can't get past the choke. I cut my prelubed wads into fourths and turn them sideways to get past the choke then flip them with my finger. Over shot cards are the same way.

I know some people use 3 or 4 OS cards in place of a wad with good results but I prefer having the lubed wad.

Also, I have made up some replica Eley patent cartridges to try. (but have not really tried them yet). They are initially a little bigger than 20ga in diameter but open up to fill the 12ga bore when rammed home against the powder.

They pass the constriction with no problem at all. Depending on how much time you want to spend prefabbing loads that might work also.