Shotgun Adapters / Chamber adapters

[Ray]

I am considering buying a 12 gauge to 9mm shotgun adapter for use in my 12 gauge Coach Gun. Has anyone tied one of these and what have been your experience? My indoor range will not let me shoot 12 gauge but they would if it was 9mm and I have a ton of ammo!

[2wheelDuke]

I can't say that I have, but I've pretty much thought the same thing. I didn't wind up buying the coach gun, but I've thought about getting 4 of them to use in the pump gun at ranges where I can't shoot the shotgun rounds. I'm not sure if it'd work in a pump though.

I've wondered how that'd work with the bullet just flying out, if it'd go out without touching the barrel or skip down like a hotdog down a hallway.

Oh, and I was thinking .38 since I reload lots of it.

[Ray]

Found some looks like I will be ordering that 12 gauge to 9mm from Short Lane Arms . By the way they have 38 -357 as well. Let you know how it works.

[Crawdaddy]

CAn you post links to where you get them? sounds neat.

[Tom-ADC]

I've shot 20 gage in a 12 gage & .410 in my 20 gage, using tubes but never tried the 9mm type not sure its something I'd do how do they extract? Is the adapter rifled?

[tacklebury]

Been looking at some of these too. I've oft thought about getting a 14" rifled adapter for my .45-70, just to carry around. Kind of a pain having to push the shell out with a stick. 8( Ended up loading some RB / unique loads which do the same thing & I can reload em. ;)

http://www.mcace.com/rifleinserts.html

http://www.mcace.com/shotguninserts.htm

[Ray]

I have heard the MCACE adapter's are hard to get any customer service and takes weeks to get. I ordered mine from www.gunadapters .com easy to use website.


http://www.gunadapters.com

[Crawdaddy]

Been looking at some of these too. I've oft thought about getting a 14" rifled adapter for my .45-70, just to carry around. Kind of a pain having to push the shell out with a stick. 8( Ended up loading some RB / unique loads which do the same thing & I can reload em. ;)

http://www.mcace.com/rifleinserts.html

http://www.mcace.com/shotguninserts.htm


I emailed these people about a year ago with no response. Did you have any luck?

[Crawdaddy]

I have heard the MCACE adapter's are hard to get any customer service and takes weeks to get. I ordered mine from www.gunadapters .com easy to use website.


http://www.gunadapters.com

How accurate are these doesn't look like there is any barrel or rifling?

[tacklebury]

I was looking more at the 15" rifled kind. Don't think those adapters give enough length to do much, but I bookmarked em in case I want to try one. ;) Thanks for the link!

[Blacksmith]

Here are a few more links from my bookmarks. I have no experiance or ties with any of them.
http://shotgunadapter.com/
http://www.gaugemate.com/
http://www.americanspecialtyammo.com/Shotgun_Adapters.html

Pellet adapters
http://convert-a-pell.com/

Blacksmith

[Rio Grande]

I have a Dina Arms 12/.45acp. It's made of aluminum and rifled. It's short as a 2 3/4 shell so the rifled portion is short. Has an o-ring inside which holds the .45acp securely, so you could buy several and use them in a pump gun.
Good accuracy offhand at 15 yards (3" or less) and shoots to point of aim using the front bead on my NEF single-shot. The boolit does NOT hit the sides of the barrel on the way out. The rifling looked rough and burred, etc. when new but I must say I found the performance outstanding.
Louder than you would think. Case pushes out easy with a rod. (not supplied)
Great, great fun. Good for plinking, training, and you actually could hit a bunny with this. Maybe good for trap line too.
https://www.dinaarms.com/

I'm going to try some of the other brands, some are steel but not rifled, all the ones readily available I've seen are short....the other brands I've seen don't have the o-ring to hold the cartridge in...
MC ACE does not answer my emails and I understand it's hard to get ahold of him. His products (I've seen examples) are very good, rifled and in longer lengths.
I'd buy one if I could get one.

[DHB]

I've used them for years. Got mine from MCA before they became MCACE 15-20 years ago. I used 44 mag in a 12/20 gauge. The boolit does not touch the walls of the barrel but the insert pulls out when you open the action. Extraction is not at all difficult, either of the insert or the sub caliber cartridge. I usually use 6 inch inserts in break open guns. Good stuff.
DHB

[justashooter]

chambered barrel inserts have become a favorite lathe project of mine lately. i have cut full length inserts in 45-70, 38-55, 30-30, 357 mag, and 22 lr in recent months. anybody looking to get 1 at a better price than in the MACE ad just e-mail me...extractors can be fitted.

[Rio Grande]

chambered barrel inserts have become a favorite lathe project of mine lately. i have cut full length inserts in 45-70, 38-55, 30-30, 357 mag, and 22 lr in recent months. anybody looking to get 1 at a better price than in the MACE ad just e-mail me...extractors can be fitted.

PM sent.
I could sure use one in 12/.38sp.
.357 OK too.

[Rio Grande]

Problem. Is putting one of the short rifled adapters into a shotgun illegally converting it to a 'short-barrelled shotgun (or rifle)"?
I'd like to know if anyone has documention from the BATF regarding this.

(6) The term “short-barreled shotgun” means a shotgun having one or more barrels less than eighteen inches in length and any weapon made from a shotgun (whether by alteration, modification or otherwise) if such a weapon as modified has an overall length of less than twenty-six inches.

(8) The term “short-barreled rifle” means a rifle having one or more barrels less than sixteen inches in length and any weapon made from a rifle (whether by alteration, modification, or otherwise) if such weapon, as modified, has an overall length of less than twenty-six inches.

http://www.law.cornell.edu/uscode/search/display.html?terms=short%20barreled&url=/uscode/html/uscode18/usc_sec_18_00000921----000-.html

[excess650]

Problem. Is putting one of the short rifled adapters into a shotgun illegally converting it to a 'short-barrelled shotgun (or rifle)"?
I'd like to know if anyone has documention from the BATF regarding this.

(6) The term “short-barreled shotgun” means a shotgun having one or more barrels less than eighteen inches in length and any weapon made from a shotgun (whether by alteration, modification or otherwise) if such a weapon as modified has an overall length of less than twenty-six inches.

(8) The term “short-barreled rifle” means a rifle having one or more barrels less than sixteen inches in length and any weapon made from a rifle (whether by alteration, modification, or otherwise) if such weapon, as modified, has an overall length of less than twenty-six inches.

http://www.law.cornell.edu/uscode/search/display.html?terms=short%20barreled&url=/uscode/html/uscode18/usc_sec_18_00000921----000-.html

Short barreled shotgun means that you cut it so that the barrel is less than 18" (would require Class III), but shooting 16/20/28/.410 ammo in a 12ga with 18" or longer barrels does not apply. It is possible to buy "short barreled shotguns" if you pass the background check and pay the Class III tax. A 14" 870 would be cool, but I don't care to go through the hassle. I saw a 12ga double listed for sale at an auction site, and it had been shortened to PG only and advertised as 8" of barrel! Ithaca made the "Auto Burglar) way back when, but I think they have been outlawed (Class III) since the 1930s.

Short barreled rifle likewise means a rifle with barrel less than 16" (Class III), so firing a sub-caliber adaptor in a 12ga with 18" or longer barrel does not apply.

I recall that some target .22s have longish barrels, but the rifled section may only be 12". The reason is that a shooter has less time to move while projectile travels down 12" than it would with a longer, rifled barrel. "Bloop tube" comes to mind.

It seems to me that the revolvers chambered for .410 shotshells/.45 Colt are skating a narrow line, but not illegal. I suppose its only because the barrels are rifled.

[Pavogrande]

I have a 12ga to 38/55 adapter -- It is full length, has a threaded end for a conical nut that centers it at the muzzle.
It is not marked, except for caliber so do not know who made it.
It is made such that the shotgun extractor activates the adapter extractor.
It will only work in a single or double, well I suppose a drie too.
I have not had an opportunity to see how well it shoots.
Anyone have a suggestion on the maker? I rather presumed european --

[Buckshot]

..............EAA had some shotgun to centerfire adaptors advertised a couple years back. May have been only the 45-70, but don't recall for sure.

http://www.fototime.com/84C2840C23E9FD2/standard.jpg

I have this adaptor (2nd from left) for shooting 45 Colt in the 577-450. Amazing how well it shoots considering how far the slug has to travel before hitting the rifling, plus at .452" it is CONSIDERABLY undersized!

................Buckshot

[hunter2]

justashooter - would like to get some inserts - are your rifled? Sent a pm, but e-mail has not been working very good lately. Have an older one from mca that has 10" in 9mm. Does real good at 50 yds. Good product, just don't get in a hurry... months on delivery....

[Rio Grande]

justashooter - would like to get some inserts - are your rifled? Sent a pm, but e-mail has not been working very good lately. Have an older one from mca that has 10" in 9mm. Does real good at 50 yds. Good product, just don't get in a hurry... months on delivery....

I gave up on MCA after repeated attempts over months to get a response to my emails. I have spoken to others who have had poor experiences w/ them.
They do make a fine product...but customer service? Forget it.

I think justashooter would manufacture a fine insert and get it to you quick.

[nanuk]

could you just take a barrel, cut it down, lathe it to fit inside, groove for some O-rings, and chamber for a pistol round?

sounds not that difficult, but perhaps illegal?

I'm not sure how legal those would be in Canada, either, but I know they are available

[nanuk]

could you just take a barrel, cut it down, lathe it to fit inside, groove for some O-rings, and chamber for a pistol round?

sounds not that difficult, but perhaps illegal?

I'm not sure how legal those would be in Canada, either, but I know they are available

[Bambeno]

could you just take a barrel, cut it down, lathe it to fit inside, groove for some O-rings, and chamber for a pistol round?

sounds not that difficult, but perhaps illegal?

I'm not sure how legal those would be in Canada, either, but I know they are available

That is all a chamber insert is basically, a barrel cut down to fit the chamber. I have made several over the years, kinda fun but have never used one while hunting. It is amazing how quite something like a 32 short is out of a 28" barreled
shotgun.

[Hang Fire]

I just might try that, looks like something that can even be done on my minilathe.

[hunter2]

MCA's are good - at least my 10" 9mm is. It just takes a long time to get them. Just got an e-mail back that said they were in business. Was hoping to get some sooner.

[justashooter]

I gave up on MCA after repeated attempts over months to get a response to my emails. I have spoken to others who have had poor experiences w/ them.
They do make a fine product...but customer service? Forget it.

I think justashooter would manufacture a fine insert and get it to you quick.

thanks for the kind words. the limitation i am working with is in regard to economical source materials for barrels. who wants an insert that is not rifled and costs over a hundred bux?

i like to buy chambered and rifled blanks or new old stock barrels from numrich and turn them to working dimensions. i sent a barrel to a board member a few weeks ago that was a few thou tight in his chamber area. i offered to re-cut it, but perhaps he has hit it with a file... shotgun chambers (and especially barrel diameters) vary considerably, so i attempt to provide a happy median.

in his case, without the barrel to try fit, i deliberately turned the length of the insert (an 18" 357) to 50 thou under-diameter and added two O rings in grooves to allow the barrel to self center. in the chamber area i cut the profile of a typical shotshell, with rim for headspacing. in future i will rebate the majority of the chamber area and allow for bearing rings fore and aft so that a tight insert can be easily fitted with a few strokes of a file.

making functional extractors for inserts is dog work, so i usually add a divot to allow fingernail extraction of fired cases. the entire insert extracts when you open the gun, sliding on the vaselined O-rings, and rides forward to chamber when you close the gun.

a recently sold out blank in 357 at numrich was a favorite:
http://www.gunpartscorp.com/catalog/Detail.aspx?pid=957250&catid=6886

what they are turned to and still in stock. is the OD big enuf to allow stock for a rim?
http://www.gunpartscorp.com/catalog/Detail.aspx?pid=958240&catid=6886
same one?
http://www.gunpartscorp.com/catalog/Detail.aspx?pid=957240&catid=10640

page with links to barrel blanks:
http://www.gunpartscorp.com/catalog/Models.aspx?catid=14228

44 mag chambered:
http://www.gunpartscorp.com/catalog/Detail.aspx?pid=958250&catid=6748

8X57 for use with low powered cast bullet handloads not exceeding 1500 foot pounds energy
http://www.gunpartscorp.com/catalog/Detail.aspx?pid=1261650&catid=10602

375 win (38-55) barrels for limited power loads
http://www.gunpartscorp.com/catalog/Detail.aspx?pid=705050&catid=10643

32 special
http://www.gunpartscorp.com/catalog/Detail.aspx?pid=1394770&catid=10634

30-30
http://www.gunpartscorp.com/catalog/Detail.aspx?pid=1285910&catid=10593

how about a long 45 acp?
http://www.gunpartscorp.com/catalog/Detail.aspx?pid=588370&catid=14395

how about a 410 in your 12 gauge?
http://www.gunpartscorp.com/catalog/Detail.aspx?pid=762670B&catid=14412

maybe this one:
http://www.gunpartscorp.com/catalog/Detail.aspx?pid=1147590A&catid=14413

trouble with most handgun blanks is that they are not chambered. somebody make it worth my trouble to buy a chambering reamer in 45 ACP or 9X19 or such and i'll turn shorts from blanks.

all pretty cheap to start with. turning would prolly be about $40-60 each, then shipping around $10. send me an e-mail to confirm, have the blanks shipped from numrich to me, and wait a month or so, depending on how things are going. send me a PMO when advised, and i ship to you.

[justashooter]

could you just take a barrel, cut it down, lathe it to fit inside, groove for some O-rings, and chamber for a pistol round?

sounds not that difficult, but perhaps illegal?

I'm not sure how legal those would be in Canada, either, but I know they are available

in my opinion, your barrel is not a "gun", or a fixed part thereof. it is an accessory that is not capable of firing a round independently. so....as long as you put it in a shotgun with 18"/26" barrel/OAL length you are over the minimum 16"/26" for rifled barreled guns.

[0369]

jusashooter, I got the last 357 barrel that you like from Numrich, sorry about that. I think it was made to be an insert, but I could be wrong. It's going to be a barrel for my daughter's Rossi combo. I turned the .795" knob on the end off and started on a lug for it.
If you have a mill or a surface grinder you can make some D-reamers for your inserts out of O-1 drill rod. They are very easy to make and work great. I've been lurking here for quite a while and was drawn to this thread because I too make my own inserts.
If you can make some D-reamers, you can get Green Mountain gunsmith specials for a very reasonable price where most are $33.00 for 20" unturned blanks. I'd offer to make some reamers for you if you don't have access to a mill, but for liability purposes I'd have to limit any help to doing the milling for you once you turn the reamer profile. You can find the specs on SAAMI web site.

0369

[excess650]

45acp/45 auto rim, and 45 Colt seem like logical choices. They're largish diameter, relatively low pressure, and wouldn't need a long barrel to be efficent. I'm thinking rifled, of course.

[Rio Grande]

MCA's are good - at least my 10" 9mm is. It just takes a long time to get them. Just got an e-mail back that said they were in business. Was hoping to get some sooner.

Glad to hear they are still in business. He does make a good product.
How was the email delivered? On the back of a mule that walked down from Alaska?
I'm still waiting for a response from MCA. It's been months. I think the mule carrying my response fell into a crevasse somewhere in the frozen north. :cry:

[dmen]

Rio, try mailing him at:MCA Sports/Ace Bullet Company,2800 West 33rd Road
Anchorage, Alaska 99517-2201. Or call him directly at: (907) 248-4913. I don't think he's very active on the internet. dmen

[rbertalotto]

http://images108.fotki.com/v613/photos/2/36012/9695081/DSC_26811-vi.jpg

http://images58.fotki.com/v612/photos/2/36012/9695081/DSC_2679-vi.jpg

http://images59.fotki.com/v111/photos/2/36012/9695081/DSC_2672-vi.jpg

More pictures here:
http://public.fotki.com/Rbertalotto/things-that-go-bang/eaa-baikal-bounty-h/

[justashooter]

If you have a mill or a surface grinder you can make some D-reamers for your inserts out of O-1 drill rod. They are very easy to make and work great. I've been lurking here for quite a while and was drawn to this thread because I too make my own inserts.
If you can make some D-reamers, you can get Green Mountain gunsmith specials for a very reasonable price where most are $33.00 for 20" unturned blanks. I'd offer to make some reamers for you if you don't have access to a mill, but for liability purposes I'd have to limit any help to doing the milling for you once you turn the reamer profile. You can find the specs on SAAMI web site.

0369

thanks for the offer. i would like to be able to offer 45 ACP from blanks, and have made a few dutchman reamers, but time is time...