45-70 remington/spartan gunworks into 450 nitro express???

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21 May 2005, 01:48

boom stick

45-70 remington/spartan gunworks into 450 nitro express???

what about this one??? can it be done??? should it be done??? ahhh...dare to dream

21 May 2005, 04:27

Pedestal

Probably not. A quick look at "Load from A Disk" shows even with the mildest loads, you'd be over standard .45-70 pressures. Perhaps with BP it might be ok????

21 May 2005, 04:30

jeffeosso

450 #2 is about the same pressure as the45/70 max load, but the bolt thrust would be higher..

bs.. it's a 7# gun.. not even a recoil junky will hot rod it much

jeffe

opinions vary band of bubbas and STC hunting Club

Information on Ammoguide about
the416AR, 458AR, 470AR, 500AR
What is an AR round? Case Drawings 416-458-470AR and 500AR.
476AR,
http://www.weaponsmith.com

21 May 2005, 04:54

boom stick

do you think it realy would have a problem with say up to 32,000 or 35,000 cup??? i think it's a c.y.a.(cover your ass) warning

21 May 2005, 07:53

ElCaballero

I think that this was discussed in great length before. I will recap it as I remember it. This little idea struck me as a fun project also.

I think the the general feeling was that it was safely possible as this action is used for a 30-06 chambering also. However the weight of the rifle seemed to make most say that it was not worth it unless you just liked painfull recoil.

The main problem that I see with this project is getting one of these rifles to begin with.

21 May 2005, 08:09

Rusty

I beleive that PWN375 of this forum coverted his 45/70 Pedersoli hammer double rifle into a 450#2 NE. It seemed to shoot well and required no re-regulation.
He did describe the recoil of the light rifle as "Brisk"!

Rusty
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21 May 2005, 18:31

El Deguello

quote:
Originally posted by boom stick:
what about this one??? can it be done??? should it be done??? ahhh...dare to dream

As long as your ammo doesn't develop over 28K PSI! My feeling is that the "action" would not be the problem, but rather the thickness of the barrel walls. There's a lot more meat in a .30/'06 barrel of the same O.D. as their .45/70 tubes. In addition, the big fat case head of the .45/70 places the stress on a much larger area.

21 May 2005, 18:32

El Deguello

quote:
Originally posted by boom stick:
do you think it realy would have a problem with say up to 32,000 or 35,000 cup??? i think it's a c.y.a.(cover your ass) warning

Try it and see! Then report your findings......

21 May 2005, 20:07

Savage99

For the price I would just use one in 45-70 as it is. The gun does not have ejectors and it's going to kick like heck even in 45-70.

I see it as a real fun gun that might need a better pad and trigger work.

21 May 2005, 20:42

Fjold

Here's the calculation for thrust against the face comparing the 45/70 to the 30.06.

45-70 (.608 Rim) .302*.302*3.14159*28,000psi = 8,022 Lbs force of thrust

30.06 (.473 Rim) .2365*.2365*3.14159*60,000psi = 10,542 Lbs force of thrust

You should be able to load the 45-70 to 36,000+psi to get the same thrust as the 30.06 on the breechface.

Frank

"I don't know what there is about buffalo that frightens me so.....He looks like he hates you personally. He looks like you owe him money."
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22 May 2005, 21:38

El Deguello

quote:
Originally posted by Fjold:
Here's the calculation for thrust against the face comparing the 45/70 to the 30.06.

45-70 (.608 Rim) .302*.302*3.14159*28,000psi = 8,022 Lbs force of thrust

30.06 (.473 Rim) .2365*.2365*3.14159*60,000psi = 10,542 Lbs force of thrust

You should be able to load the 45-70 to 36,000+psi to get the same thrust as the 30.06 on the breechface.

Yes! BUT my concern is not the thrust on the breech face so much as the thickness (and composition of the steel) in the chamber walls - the question is, "is the chamber strong enough for that pressure level using a case of the diameter of the .45/70??

23 May 2005, 21:42

boom stick

is it a better idea to make the 30-06 one into a 375 or 411 hawk???

23 May 2005, 22:05

TC1

I was in Walmart yesterday and saw some Sparton single shot shotguns. It may not be too long before the double rifles come out. My biggest concern after owning a Baikal stagecoach gun is the triggers, They were so bad it took all the fun out of playing with it. Literally a 1/2" of creep in the back trigger! I plan on looking at a 45/70 when they hit the store shelves, But I wouldn't order one sight unseen.

Terry

23 May 2005, 23:57

boom stick

even a blak powder one in 450 n.e. would be aaaaaawwwweeeesome

22 November 2010, 21:58

BwanaCole

quote:
Originally posted by boom stick:
is it a better idea to make the 30-06 one into a 375 or 411 hawk???

What would it take to make a .30-06 baikal into a hawk .375?? Is it just a matter of reaming out the bores like a .338 or would it require much more serious machining??

Please edjamakate me!

I picked up the baikal .30-06 cheap and don't plan on changing it anytime soon but I kinda like the idea of a .375 built on .30-06 brass!

H. Cole Stage III, FRGS
ISC(PJ), USN (Ret)

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22 November 2010, 23:41

Snowwolfe

The biggest disadvanatge to rechambering either the 06 or 45-70 is the thickness of the barrels.
The 06 might have enough wall thickness left to be rebored up to .338 but the 45-70, forget it.
I measured the wall thickness at the muzzle and it was approximately .045! After 2 shots from each barrel it was to hot to hold.

23 November 2010, 01:35

BwanaCole

quote:
Originally posted by Snowwolfe:
The biggest disadvanatge to rechambering either the 06 or 45-70 is the thickness of the barrels.
The 06 might have enough wall thickness left to be rebored up to .338 but the 45-70, forget it.
I measured the wall thickness at the muzzle and it was approximately .045! After 2 shots from each barrel it was to hot to hold.

PM sent to you!

Cheers,

23 November 2010, 04:36

Idaho Sharpshooter

It would be very simple to rechamber to the 45-120 (aka 45-3 1/4). You can headspace on the rim recess, and dies are reasonable priced.

Rich

I am building a SS in this cartridge

23 November 2010, 04:56

jeffeosso

the gun is too light for using 450 NE loads ... even for ME....

gentlemen, I've had the 45/70 .. its too light to do this with

23 November 2010, 12:17

BwanaCole

quote:
Originally posted by jeffeosso:
the gun is too light for using 450 NE loads ... even for ME....

gentlemen, I've had the 45/70 .. its too light to do this with

Thats what I thought as well. It led me to thinking (dangerous idea, I know!) that the ought-six bored out, using the ought-six brass would be a much better idea. I twoul leave all the barrel thickness around the brass intact.