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Choke in a smoothbore?

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Hawkdancer:
I have a 20 ga.(.62 cal) smoothbore drop in barrel for my Hawken rifle, my question is since this will be a dedicated shotgun, what
choke would be better, modified or full?  I am leaning towards full, as most of the shots around here are longer range.  The choke I'm considering is the Invector type screw in.  I may even have one in the shop, I would find a gunsmith to install it as I don't have the right tools.
Hawkdancer

Gimlis Ghost:
Have you given thought to a "Jug Choke"?
With a jug choke the muzzle remains the same diameter as the bore , the Jug is formed by material being removed from a point several inches into the bore for a short distance.
Back boring is another option. Both are more period correct for muzzle loaders.

Eric Krewson:
All of us traditional type flintlockers that choked their gun had a jug choke cut in the barrel, done correctly they do very well and you do have a choice of how much choke they cut when you have it done.

I haven't heard of a TC smooth bore barrel being jug choked but I could ask on one of my favorite M/L boards for you, I am sure guys have done it but need their direct response.

I had two smoothie barrels jug choked, one came out a 40 yard turkey gun and one 25-30 yard gun. It costs around $120 to have one jug choked.

Here is how a jug choke works; and expansion chamber of .025 is reamed out for a full choke about 1" inside the barrel, this chamber is tapered on each and back to the barrel diameter. Shot comes down the bore, expands into the chamber then hits what amounts to a tapered forcing cone on the muzzle side. This directs the shot into the center of the bore to form a long narrow shot string.

Here is a jug choke and a pattern I shot with mine (the 25-30 yard gun) at 25 yards.

Eric Krewson:
I asked about TC jug choking on the M/L Forum, will let you know the answers.

Eric Krewson:
So far I only got one answer on the M/L Forum; one guy said he cut his own jug choke with a brake hone and it worked well for him.

I have a friend who has cut a number of jug chokes with a brake hone in his smoothbores, this is an iffy job that may or may not come out well. I had mine done by a guy who specializes in the procedure and would go that route if I had another done.

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