I always wanted a double rifle to play around with.........For $600 it could be fun!

Baikal 12ga with 45-70 tubes

You call it a "Quasi" double. I had one and "quasi" got it to regulate with about 2 weeks of trying to regulate it with the cams in the barrel using factory loads (a failure). The I tried 350 grain lead bullets (leaving the cams alone) and got it to shoot 4" at fifty yards at about 1200 fps.

Work for me and there are a bunch of pigs that haven't complained much since taken a right and left in the shoulders.

Slow is a good word to use in finding out what works for you! It wasn't fast, but eventually quite satisfying.

Agreed! It is a double, and 45/70 ammo is cheap to roll. Enjoy the gun. It is not like you are slinging $2 bullets down range every time you shoot!
Peter.

I have no idea if the action can take it, but I think a 45-70 can be rechambered to a 450 N°2 or some such classic caliber. You'd have an African double you can throw in the pick-up and not worry about scruffing up the finish.

I'm sure people who know better will chime in with a reality check.

This rifle will be used on hogs and to cull whitetail does...just a fun thing. If I go to Africa I'd build a double or buy something more appropriate.

I'm in love with the 45-70. Amazed at the accuracy I'm getting out of my Marlin 1895 with it's new barrel! Once I discovered Precision Cast .460 lead bullet............

quote:

Originally posted by Wink:
I have no idea if the action can take it, but I think a 45-70 can be rechambered to a 450 N°2 or some such classic caliber. You'd have an African double you can throw in the pick-up and not worry about scruffing up the finish.

I'm sure people who know better will chime in with a reality check.

I am not sure the action would take it but I believe the lack of metal in the barrels is where this idea came unstuck.

To the OP
Well done on the pick up, not a bad little DR / Shotgun to be able to carry around.

.

I shot Nitro 450,s and have wanted one ever since! Someday the money and gun will come to gather! Have fun Clint

Actually, with the inserts the diameter of a 12 ga chamber (.800 or so) would be not a really good idea for the bottlenecked case. Still, Chrome moly steel is very tough, these large bore rounds operate at fairly low pressures (below 40Kpsi). It is back-thrust you would also be concerned about and even then, with a dry chamber, that is low too. Just keep your pressures well below 30k PSI. Baikals are strong steel frames, proved at 14,000 psi (I recall for 16 guages, which is what I use for DR building). And remember, all of a shotgun backthrust gets to the frame, whereas a brass case can handle a lot of pressure (PO Ackley proved that it, with no breech support, handles about 40,000 psi). Only if it is dry, of course.
I still suggest you stick with the 45-70.

I still want to build a DR on a shotgun frame. Every time I handle one of those sweet CZ Bobwhites in 28ga I get all gooey.....I wish I could find out if it would handle a 45-70 back thrust.

I have a Savage 311 in 20ga in the closet that I bought for this project. But it turned out to be such a great handling shotgun that it became my favorite upland gun. And I'm convinced it wouldn't handle a 45-70 back thrust.

I read the book on building DR from SG but I'm still a bit confused..........

PM me if you want to talk about building DRs on shotgun actions; I have done 3 so far and am working on #4, a 9.3X74R. I would not use a Stevens/Savage 311. I think they are made of cast iron and they only have one locking "bite". I think I can help with any confusion, though. It is easy to calculate back thrust.

THANKS! I will get in touch with you.

RoyB

They are cheap fun.
The only downfall is that the tubes will only be as good as the original gun.
The best target I could manage with the provided "cams" is attached below.



I have made a set of cams to move the L barrel over a little to the right and raise the R barrel 5".

I will be test firing within the next few weeks.
Hopefully I will have good news.

The provided cams only move the barrels L to R Giving more or less convergence in a horizontal plane.

Nitro

quote:

Originally posted by RoyB:
I still want to build a DR on a shotgun frame. Every time I handle one of those sweet CZ Bobwhites in 28ga I get all gooey.....I wish I could find out if it would handle a 45-70 back thrust.

I have a Savage 311 in 20ga in the closet that I bought for this project. But it turned out to be such a great handling shotgun that it became my favorite upland gun. And I'm convinced it wouldn't handle a 45-70 back thrust.

I read the book on building DR from SG but I'm still a bit confused..........

I beleive most CZ (shotgun) actios will take most DR pressures.

I don't think it would be wise to build a .45-70 on a 28ga action, but I know they have been built without problems on (CZ) 16ga actions.


Gordon Harms of David City Nebraska uses the CZ actions for his shotgun-to-double rifle conversions with success.


I nearly bought one from him, but we could not come to terms on esthetics and his conversions are extractors only, and I wanted ejectors.

Even so, his conversions are decent, sound and very very accurate double rifles.

I beleive his base price is around $4,500.


Regardless, I like your "quasi" DR. Looks like a lot of fun.

Great rifles but the barrels are pretty thin. Pay attention to the markings on the barrels as they are limited to loads producing about 28K pressure. Not to much of an issue as they are light and any stiffer loads really hit hard.

Snowwolfe

I think you are mistaking the MR221 or SPR221 for the IZH 43 with Tangfoglio conversion tubes.
Though the tubes are thin at the muzzles, the chambers are pretty healthy and completely enclosed by the 12 ga. chamber also.

Nitro