JUG CHOKE - RANGE REPORT

[roundball]

1" x 33" .62cal GM Flint Smoothbore Jug Choked "Full"

70grns Goex 3F
1 Blue & Gray OP dry fiber card (1/8")
1+5/8oz #6's
.030" Circle Fly OS card

Range conditions = 29* & windy.
Bore was cleaned / lubed for every shot.
Target = 9" paper plates with aim point stickers:

15yds = 188 pellets
20yds = 139 pellets
25yds = 92 pellets
30yds = 71 pellets
35yds = 53 pellets
40yds = 31 pellets

The overall patten sizes on the backing paper were even and contained in areas from about 12" - 30" over the range of distances tested.

It'll be outstanding for Turkey, Trap, or any long range shooting.

 

[Rebel]

Sounds like you have a winning combo there for shot. How about penetration? How far will it penetrate a tin can with that load? Will be interesting to see how it does with rd balls now with the jug choke. Are you going to test it with them?

 

[roundball]

Sounds like you have a winning combo there for shot. How about penetration? How far will it penetrate a tin can with that load? Will be interesting to see how it does with rd balls now with the jug choke. Are you going to test it with them?

Penetration is fine...same load I used before with paper shot cups...the 6's blow right through a heavy tuna can at 30yds.

Sample tested some .595's with 80grns Goex 2F and .015" patch...felt loose seating them...sloppy 6" group at 25yds from a chair...then tried some with a .015" PLUS a .010" patch together for a very tight fit...got holes cutting each other at 25yds from the chair...so my guess is that the Jug Choke won't have any negative effect on PRBs...will order a bag of .020" or .022" patches and see how it'll group with those.

 

[Rebel]

Sounds good. Wonder if a .600 rd ball would be a better fit? May have to try out that shot load in my Jackie Brown .20 ga. Thanks for the report.

 

[Slowpoke]

I've never had a barrel jug choked before but I'm considering it. Problem is, I've heard they're bad for PRB and I don't want to build another gun. Anyway, RB next time you go out... shoot a 3 shot group at 50 (if you would be so kind) and let me know what happens. If it stays the same for you I'll ship my barrel out to Iowa. Didn't you kill a deer this year with your smoothbore? was it this barrel or a 28?

 

[BS]

Sounds like you have a winning combo there for shot. How about penetration? How far will it penetrate a tin can with that load? Will be interesting to see how it does with rd balls now with the jug choke. Are you going to test it with them?

Penetration is fine...same load I used before with paper shot cups...the 6's blow right through a heavy tuna can at 30yds.

Sample tested some .595's with 80grns Goex 2F and .015" patch...felt loose seating them...sloppy 6" group at 25yds from a chair...then tried some with a .015" PLUS a .010" patch together for a very tight fit...got holes cutting each other at 25yds from the chair...so my guess is that the Jug Choke won't have any negative effect on PRBs...will order a bag of .020" or .022" patches and see how it'll group with those.

I would try some bore sized balls........forget the patch, just load them like you do shot :grin:

 

[roundball]

I've never had a barrel jug choked before but I'm considering it. Problem is, I've heard they're bad for PRB and I don't want to build another gun. Anyway, RB next time you go out... shoot a 3 shot group at 50 (if you would be so kind) and let me know what happens. If it stays the same for you I'll ship my barrel out to Iowa. Didn't you kill a deer this year with your smoothbore? was it this barrel or a 28?

I'll probably do that this summer after Turkey season is over...but my feeling is, even though it was only 25yds, if holes are cutting each other at 25yds in spite of the jug choke, don't know what effect the jug choke would suddenly have on a ball at 50yds... :hmm:

Yes, a couple bucks in November were with .530's out of a GM .54cal Flint smoothbore...both of these GM Flint smoothbore seem to be outstanding

 

[TN.Frank]

On a similar note, Mossberg "Back Bores"(i.e. Jug Chokes) their 3 1/2" Mag. shotguns and you can't shoot slugs out of those barrels so my best guess is that round balls will be pretty much out. Still, it'll be better as a shotgun then one with no choke.

 

[roundball]

"...so my best guess is that round balls will be pretty much out..."

That wasn't my experience with mine...shot RB's perfectly

 

[Mike Brooks]

"...so my best guess is that round balls will be pretty much out..."

That wasn't my experience with mine...shot RB's perfectly

All of my customers who have had me build them jug choked guns from 20 to 10 bore have told me they shoot round ball fine.

 

[Slowpoke]

All of my customers who have had me build them jug choked guns from 20 to 10 bore have told me they shoot round ball fine.

Ok... I'm going get my barrel "choked" by your guy in Iowa, but if I have to build another gun to shoot roundballs..... I'm breaking into your chicken coop. :rotf:

 

[Horace]

Backboring and Jug choking are two totally different procedures. Backboring is opening the entire bore up to a larger size. This allows the degree of choking to be less and thereby give a more even pattern. A full choke in a regular 12 gauge in about 40-42 points of construction. A full choke in a backbored barrell may be from 32-36 points. I had this done to a trap gun I had and shot quite successfully from the 27 yard line.

Jug choking has been previously described but it does not use the entire barrel to create the choke.

 

[Mike Brooks]

All of my customers who have had me build them jug choked guns from 20 to 10 bore have told me they shoot round ball fine.

Ok... I'm going get my barrel "choked" by your guy in Iowa, but if I have to build another gun to shoot roundballs..... I'm breaking into your chicken coop. :rotf:

If I had a smoothbore that was an exceptional RB shooter and I actually only occasionally shot shot thru it i don't think I'd jug choke it. But, If I used the jug choked gun for mostly shot and then shot the occasional deer with it too with RB then jug choke might be OK.... what I'm saying is your gun may loose it's tack driving capability, but still shoot RB "OK".
I'd be carefull about going into that coop unescorted, I don't raise your average very day chicken you know....these boys gotta be tied up to keep them out of trouble. :haha:

 

[crgabel]

At the risk of sounding really stupid "What is a jug choke"
Something machined into the end?
Craig :redface:

 

[roundball]

At the risk of sounding really stupid "What is a jug choke"
Something machined into the end?
Craig :redface:

Yes, a several inch long section inside a cylinder bore barrel that is honed out a little larger than the existing cylinder bore...creates an 'expansion chamber' a few inches long just inside the muzzle, the results of which create a choke effect on the shot column as it comes back down to cylinder bore diameter just prior to muzzle exit.

 

[crgabel]

Thanks for the info.
Craig

 

[KyFlintlock]

Roundball,

Did you have the same stats to compare that was before you had it jug choked?

Nice job.
wess

 

[roundball]

Roundball,

Did you have the same stats to compare that was before you had it jug choked?

Nice job.
wess

Not documented...suffice it to say it was unuseable for Turkeys beyond about 15-20 yds with it's cylinder bore.
I countered that by using home made paper shot cups and I do have some stats for a few distances with them.

The jug choke is not only tighter than the paper shot cups, the shot cups are a step I no longer have to do

 

[KyFlintlock]

Makes sense to me. I called him too, but he won't be able to do mine in time for turkey, so I'll make do until then.

Good luck on the turks.
wess

 

[Greenmtnboy]

1" x 33" .62cal GM Flint Smoothbore Jug Choked "Full"

70grns Goex 3F
1 Blue & Gray OP dry fiber card (1/8")
1+5/8oz #6's
.030" Circle Fly OS card

Range conditions = 29* & windy.
Bore was cleaned / lubed for every shot.
Target = 9" paper plates with aim point stickers:

15yds = 188 pellets
20yds = 139 pellets
25yds = 92 pellets
30yds = 71 pellets
35yds = 53 pellets
40yds = 31 pellets

The overall patten sizes on the backing paper were even and contained in areas from about 12" - 30" over the range of distances tested.

It'll be outstanding for Turkey, Trap, or any long range shooting.

Turky season starts the 8th here in CO so guess what I'm doing. Roundball have you shot turky head targets with that load s..