Traditional Muzzleloading Association

Traditional Firearms => Caplock Pistols => Topic started by: sse on August 30, 2013, 12:58:21 PM

Title: How big is "12/mm"...?
Post by: sse on August 30, 2013, 12:58:21 PM
That's what it says on the barrel of the little derringer, per Spain, just picked up...They oughta talk 'merican...!
Title: Re: How big is "12/mm"...?
Post by: Voyageur on August 30, 2013, 01:03:34 PM
~ 7/16"---The factor is 25.4 mm/ in......"Doc" :hairy
Title: Re: How big is "12/mm"...?
Post by: sse on August 30, 2013, 01:06:30 PM
Quote from: "Voyageur"
~ 7/16"---The factor is 25.4 mm/ in......"Doc" 8)
Title: Re: How big is "12/mm"...?
Post by: R.M. on August 30, 2013, 01:10:34 PM
.472"
Title: Re: How big is "12/mm"...?
Post by: sse on August 30, 2013, 01:13:30 PM
Quote from: "R.M."
.472"
Thank you, sir...most stand-up on your part!

So, then what size stuff do you feed it?  Anybody know?  I'm gonna be in some card games on the river, with some pretty iffy rascals, and I'll need a little protection...!!!  LOL
Title: Re: How big is "12/mm"...?
Post by: R.M. on August 30, 2013, 01:23:57 PM
That kinda depends, is it rifled or smooth, front stuffer or cartridge? What does the bore actually measure?
Title: Re: How big is "12/mm"...?
Post by: sse on August 30, 2013, 01:31:59 PM
It's a muzzlelaoder.  Lookin at it right now...does not appear to have any rifling at the muzzle, and a rudimentary measure of the bore shows more like 11/mm, not 12/mm.
Title: Re: How big is "12/mm"...?
Post by: R.M. on August 30, 2013, 01:36:30 PM
11mm is pretty darn close to 7/16 or 44 cal. Comes out to .433". There should be balls in the .420" neighborhood with an appropriate patch.
Title: Re: How big is "12/mm"...?
Post by: sse on August 30, 2013, 01:39:37 PM
Thanks a bunch, R.M... :bow

Looks like it will be "trial and error" to get this right...meantime, "I'll see that and raise ya..."
Title: Re: How big is "12/mm"...?
Post by: R.M. on August 30, 2013, 01:43:08 PM
Call
Title: Re: How big is "12/mm"...?
Post by: sse on August 30, 2013, 01:51:50 PM
Quote from: "R.M."
Call
poker face!
Title: Re: How big is "12/mm"...?
Post by: sse on August 30, 2013, 02:24:47 PM
Low res pic, but here's the little gipper right here:

(http://i.imgur.com/c1SUDsr.jpg)
Title: Re: How big is "12/mm"...?
Post by: R.M. on August 30, 2013, 02:31:11 PM
Do you have any .440" balls, intended for a 45? See if they drop down without a patch. Looks like TOW has a great assortment of balls in that range.
Title: Re: How big is "12/mm"...?
Post by: sse on August 30, 2013, 02:36:43 PM
Thanks for asking.  

I went round and round on this regarding a .44 that I have.  I did find some excellent sources for a wide range of diameters/sizes.  I'm sure I'll get something to match up.  I do wish the bore was rifled, but ce la vie...don't think the bad guys will be any further than 5 paces, or so...
Title: Re: How big is "12/mm"...?
Post by: R.M. on August 30, 2013, 02:39:10 PM
Cross Table accuracy is all a fellow needs.
Title: Re: How big is "12/mm"...?
Post by: sse on August 30, 2013, 02:41:14 PM
Quote from: "R.M."
Cross Table accuracy is all a fellow needs.
And nearby egress... :bl th up   A waiting steed wouldn't hurt, either...
Title: Re: How big is "12/mm"...?
Post by: rollingb on August 30, 2013, 04:14:43 PM
Quote from: "sse"
Quote from: "R.M."
Cross Table accuracy is all a fellow needs.
And nearby egress... :(  :rt th  :laffing )
Title: Re: How big is "12/mm"...?
Post by: sse on August 30, 2013, 04:17:40 PM
Quote from: "rollingb"
Quote from: "sse"
Quote from: "R.M."
Cross Table accuracy is all a fellow needs.
And nearby egress... :(  :rt th  :laffing )
Yer a riot, rondo...!

I won't be drillin on the poor little thing...I don't have my dentist's license...
Title: Re: How big is "12/mm"...?
Post by: Uncle Russ on August 31, 2013, 01:55:21 PM
Quote
I had one of those little Derringers many years ago,... I drilled it out to 1/2" and shot .490 balls to match my rifle. (it didn't seem to affect the Derringer's 100 yard groups at all

 :Doh! OMG! now THAT really surprises me.
Now ya done it! Yer goin' have Jim Beau trying to make paper at 100yds, with a 1 yd. gun.

Jim, take it from a guy who knows......these guns are actually quite modern and in tune with today's world, they are paperless.
 

Uncle Russ...
Title: Re: How big is "12/mm"...?
Post by: Fletcher on August 31, 2013, 06:29:03 PM
What is yer price on the pocket pistol?  I would be interested iffen ya peddle it - specially
iffen I can fresh it out to .50 smooth like Uncle Russ says!!!
Title: Re: How big is "12/mm"...?
Post by: gunmaker on September 01, 2013, 12:29:16 PM
Wanna make it bark ?   shoot lead conicals in it. I have .50 like that & it really packs a wallop with 15 gr. & a  250 gr. ball-et.     ...Tom
Title: Re: How big is "12/mm"...?
Post by: sse on September 02, 2013, 11:13:37 AM
Well, the other night I cleaned out the bore pretty good.  It had been lubed, but there was some rust gunk in there, not too bad...there's still some in there back by the breech, not sure how to extract it.  Anyway, the channel is wide open and that's a good thing.  

The nipple is a strange little tapered thing.  I removed it, though I don't have a proper size wrench.  I tried to screw in a conventional nipple, but the threads were a tad too big, so it wouldn't go.  Yesterday at the rondy, my bud put a cap on her and tried to get it to go off, but the spring seems a might too weak.  Not even sure if #11 is the right size, given the taper I mentioned.

Accuracy?  Well, that'll be limited, especially given the fact the post for the front bead protrudes slightly into the bore at the muzzle...!  What a riot!
Title: Re: How big is "12/mm"...?
Post by: rollingb on September 02, 2013, 12:40:28 PM
Quote from: "sse"
Well, the other night I cleaned out the bore pretty good.  It had been lubed, but there was some rust gunk in there, not too bad...there's still some in there back by the breech, not sure how to extract it.  Anyway, the channel is wide open and that's a good thing.  

The nipple is a strange little tapered thing.  I removed it, though I don't have a proper size wrench.  I tried to screw in a conventional nipple, but the threads were a tad too big, so it wouldn't go.  Yesterday at the rondy, my bud put a cap on her and tried to get it to go off, but the spring seems a might too weak.  Not even sure if #11 is the right size, given the taper I mentioned.

Accuracy?  Well, that'll be limited, especially given the fact the post for the front bead protrudes slightly into the bore at the muzzle...!  What a riot!
That must be one'a them new fangled "muzzle brakes" that slows down the projectile to prevent bad things from happening.  :laffing
Title: Re: How big is "12/mm"...?
Post by: sse on September 03, 2013, 09:54:19 AM
LOL...I bet I could shoot shot out of it, too.
Title: Re: How big is "12/mm"...?
Post by: dmills on April 24, 2014, 11:34:57 AM
Quote from: "R.M."
Cross Table accuracy is all a fellow needs.

Or under table accuracy if that fits your need.

Slug the barrel and measure might take some guessing out of the trial and error.
Title: Re: How big is "12/mm"...?
Post by: sse on April 24, 2014, 11:51:16 AM
That's what I meant... 8)