FWIW...

http://www.eaacorp.com/firearms/rifles/sidebyside/izhmp221t.shtml

I was wondering that question myself, can the .45/70 version take some of the higher pressure loads from Garret, Cor-bon or Buffalo Bore? It would seem that it is the same action as the others that are chambered for the high pressure of the .308, .30-06 and even .270 which is 65,000 psi. If it could hit a 6 or 8 inch target at 50-75 yards, it would truly be a real value for the money.

I'm with Jeffe on this one. The rifle may not be up to rechambering to a bigger-base nitro case, but it no doubt could be punched out to .45-90 or .45-110.
I have owned two Baikal shotguns and the things aren't fancy, but they are built like Russian tanks.

Jeff,
You make a very valid point. I would like to see one. Could it be re-chambered for a Nitro Express round?

What is the operating pressure of some of the old .45 cal Nitro rounds.

Just e-mailed EAA and their latest reply on availability of the double rifles was: "You will see this rifle in mid-2005 as the Spartan by Remington."

How much work would it be to re-chamber to say 450#2, and could the rifle handle it, or one of the hot Garrett loads??

Hey, I have one of their shotguns too; thought about making a Cape Gun out of it (that way, you don't even have to worry about regulation) but began shooting clays with it and I don't want to stop. That is ok, it was the long barreled version anyway and it would cost more to have them cut and re-soldered than I paid for the shotgun, new. Somewhere down the road I will go back and get a short version (coachgun) and have one of the barrels lined. Too bad they are not super-strong greener crossbolt actions, I might have gotten the 20 gauge and had the barrel lined and chambered to 450 Martini-Henry just to save from changing the extractors.

450 Alaskan, just a re-bore in the chambers.

Roger QSL

Is anyone familar with what they are saying about regulating the barrels?

"The MP221 applies modern technology to a traditional side by side rifle. A reasonably priced side by side rifle with the traditional methodology for barrel regulation (shims and solder).
Fix one barrel and allow the customer to adjust the second barrel to the first.
Therefore you sight in one barrel and adjust the second barrel point of impact to the first via a jackscrew between the barrels. The jackscrew is a simple answer to an age old problem of barrel regulation on a side by side rifle"...

Where would the "jack screw" be located? I have seen a "regulation" screw located on the end of the short fore end that simply applied pressure to one, or the other barrels at a distance of about 12"-14" from the breech. It was my assumption that this device was for different loads and not for regulating both barrels.
Could anyone expound on this just a bit?
I've got a feeling that all is not as it appears with these new rifles...sure hope I'm wrong.

Thanks, Russ