45/70 mossie

[mike24d20]

:icon_scratch: Is it possible too turn a 91/30 mossie from 7.62x54 into a 45/70? I am thinking that since the rims of the rounds are about the same, it might be possible. An if it is possible, who could do the work?

[Art]

A couple of decades ago I remember a conversion to .45-70 of Siamese Mausers. I never actually put my hands on one but I understand they worked ok. Of course that was a commercial undertaking where a lot of rifles were converted.

It sounds like a really expensive proposition. You'd have to find a place to have a barrel made that would be threaded to fit a Mosin-Nagant receiver, that alone sounds real expensive. The first thing to do, it seems to me, would be to see if a .45-70 cartridge will fit in the magazine and feed.

[John Sukey]

Or you could just buy a 45-70 Marlin lever action

[mike24d20]

Had one, did not like it so off it went. if was going too go lever action again I would get a 1886 browning. Just like the idea of having a bolt action on a old time reciver. An ER Shaw does make bbls in 45/70 an hopefully they can thread the bbl also.

[Guamsst]

Just bore the stock barrel out to .45" What's the worst that could happen.....LOL

If you are putting a new barrel on it then I really don't see a problem different from any other rifle. Can a barrel be found to fit it? can the action handle it? If yes and yes then it is a matter of money.

[dogtag]

Some years ago I bought a 1871 action with a French 6.5 barrel [Daudetau]
Put a 45/70 barrel on it. Love it.
{I already had and still have an excellent 71]

[mike24d20]

Got onto the er shaw web site. Bbls are cheap enough, but the add on's are a killer--true bolt face-lap lugs-flut bbl-blue bbl. Man that stuff adds up quick. Tried calling them, left message but no return call since I posted first idea. But I will keep trying as I want a 45/70 bolt gun based on the 91/30 action.

[BlitzKrieg]

The Mosin is a nightmare to rebarrel. Just go back to the a Marlin or get a Siamese Mauser action and go from there.
Forget the Mosin.

[mike24d20]

Blitz: What makes it a b-auch too rebarrel? Could it be the size of the bbl. next to the reciver or what? mike

[S.B.]

A couple of decades ago I remember a conversion to .45-70 of Siamese Mausers. I never actually put my hands on one but I understand they worked ok. Of course that was a commercial undertaking where a lot of rifles were converted.

It sounds like a really expensive proposition. You'd have to find a place to have a barrel made that would be threaded to fit a Mosin-Nagant receiver, that alone sounds real expensive. The first thing to do, it seems to me, would be to see if a .45-70 cartridge will fit in the magazine and feed.
My son owns one and I think it's originally chambered for .45/70? It shoots great.
Steve

[k arga]

S B can we get a little more info on the rifle.
thanks
kurt

[S.B.]

S B can we get a little more info on the rifle.
thanks
kurt
When I see my son next. Probably this weekend, his daughter has a 4-H range session. I've seen it but, never went with to shoot it.
Steve

[Dick Hosmer]

AFAIK, neither the Mauser (Siamese or otherwise) or the Moisin-Nagant was EVER "originally chambered" in .45-70.

If you want a .45-70 bolt gun, get a Remington-Lee. No conversion needed. Also, a detachable magazine.

[dave]

Not original 45-70. The Siamese cart was rimmed so bolt and magazine needed nothing (or almost nothing) done to them. They were popular as original ammo is and was hard to find and expensive. Now the rifles are worth big bucks, would be a shame to alter one, but actions or otherwise molested examples could be found. They were converted by importers, so they could sell them!

[PhillipM]

Looks to have been done.


https://www.youtube.com/watch?v=IekTNJDHGB8

[da gimp]

Back in 1981 a good friend had one of the Siamese Mausers that was converted to.45-70. Whoever the gunsmith was... he did a great job on doing it. With judicious hand loads, worked up very gradually... we got within 10% of Winchester's factory .458 Winchester soft point loads in velocity. If you have a good gunsmith do it.. & he understands the need for opening up the magazine & how to do it...you'll be okay... I'm sure that a smith could google the proper dimensions & the proper way to convert it.............Roger's rifle fed from the magazine without a hitch..my understanding was that this was the tricky thing to do right... the first time.