Long Shotgun Inserts vs. Stubbing?

[jkpq45]

So, here's an idea I have; it needs open debate, and that's what I need your help with!

Let's say (hypothetically) I have a Winchester Model 70 .30-06 take-off barrel in fine shape.  I've seen these shotgun barrel inserts for calibers up to .30-30; what are the chances I can turn a piece of high-carbon steel so the interior is threaded to accept the threaded Winchester barrel and the outside is contoured to match the profile of a 10Ga shotshell?  What, then, are the chances I could chamber this device (with some means of centering the "insert" down near the end of the 10Ga barrel) into a 10Ga Handi on a modern SB-2 receiver and not blow myself to hell?

Keep in mind, I'm just in the "thinkin 'bout it" phase and haven't flipped on the lathe... yet.

Thanks!
jkpq45

[jeepmann1948]

Looks and sounds like it could be done but I am thinking it would be very heavy to tote around in the finished mode . It would not be any more work to use a donor barrel and stub it with the Model 70 barrel and rechamber to the desired cartridge.IMHO

[jkpq45]

Looks and sounds like it could be done but I am thinking it would be very heavy to tote around in the finished mode

S'alright--keeps the felt recoil impulse down

The alternative is to build my own barrel stub "upper receiver."  A nice chunk of 4340 and all the machine time is going to run more than this idea, though--so, I'm thinking.

[quickdtoo]

Primer problems would be an issue with full pressure loads on the SB2 10ga frame due to the large firing pin, that would require  bushing of the firing pin, not an easy task since it's built in a downward angle, a 10ga barrel won't fit an SB2 rifle frame, so that's not an option.  Just buying a used 30-06 Handi would be a lot less trouble.....and a lot lighter as George mentioned. 
 
Tim

[jkpq45]

...a 10ga barrel won't fit an SB2 rifle frame...

I thought the 12ga USH, 10ga and rifle barrels all used the same SB-2 frame.  If I send a rifle SB-2 frame to H&R, they won't put on a 12ga USH or 10ga barrel on it for me?

[quickdtoo]

No, they aren't the same, the 10ga barrels including the 12ga USH are 1.2" in diameter at the chamber swell, rifle and standard shotgun barrels are 1.1" in diameter, a 10ga barrel requires the bigger frame opening of the SB2 shotgun frame for the chamber swell, H&R won't fit 10ga or 12ga USH barrels to SB1 or SB2 rifle frames.

Tim

[jkpq45]

Will  they fit the smaller shotgun barrels to the large 10ga SB-2 shotgun frame?

(Example: 12 ga, 28" VR with screw-in chokes barrel listed for $85 on the Barrel Accessory Program page).

[quickdtoo]

Nope, read the accessory barrel page,  10ga shotgun and 12ga USH can only be fitted with 10ga and 12ga USH barrels.

Tim

http://www.hr1871.com/Support/accessoryProgram.asp

[gcrank1]

Your idea has merit, especially for a heavy bench gun or from a blind. Ive thought of doing the same with my Ruger No.1-B barrel,in a 12ga. since nobody seems to want to buy it. I was thinking bob 8-10" off the front and use it to make a 32ACP insert barrel and use the longer one with cast bullet loads in the '06 chambering.

[jkpq45]

Fun update time:

I have a 204 Ruger barrel that was pulled off a Remington 700 rifle; am turning its OD down to fit in the 12 ga donor barrel I have for my SB-2.

Will keep you posted....

[NYRebel13]

What about something like these?  I know they would have to be lower pressure loads.  I was thinking of it for the 45 colt. 

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

[gcrank1]

My idea was to make the 'adapter' for the barrel threaded end have the shotshell rim and base dimensions and the barrel swell proper be a tad easy slip fit for the chamber, then turn a muzzle end 'ring with an O-Ring groove to carry and center it up in the shotgun barrel (not all are precisely the same, so some give might be a good thing?). This forward carrier could actually be turned with an off center rifle barrel hole to be able to regulate it within to shoot to the sights and locked down with set screws.
I think Id use the filed notch at the back to use a manual extractor for simplicity, or at least until I had it all worked out.