to make a bolt action 450 marlin

[forty below]

what gunsmithing/$$ cost necessary to convert short action ruger mkII so it chambers the 450 marlin?

i have heard that a short action 350 rem mag, 300 wsm can be rebarreled to 450 marlin.

if i want to keep costs down can original factory stock be reused. (i imagine a #5 barrel would be good?)

curious about folks experience, advice.

forty below

 

[Float Pilot]

The 450 Marlin is the ballistic twin to the old 458 x 2 inch American that was invented by Frank Barnes back in the early 60s.
The lawyers at Marlin made them move the belt to an odd position so you could not chamber a 450 Marlin round into something like a 300 Win Mag. (Something that you could do with the old 458 x 2 inch which was a cut down 458 Win mag brass.)

I wonder if the odd position of the belt might cause problems when using a box magazine in a bolt actioned rifle?

I don't think I would ruin a prefectly good 350 Rem Mag (a 300 yard rifle) , just to chamber it in a cartridge that has the same punch as a warm 45-70 load. (150 yard rifle)

 

[Murphy]

I think your right on track, a 350 or WSM could be rebarreled with no other changes, and would feed well. I do recall someone on this forum making one of them and we tried to interest Ruger in making one, but that didn't go well. I only know of one other ever made and it was a rebarreled 350 M77. It has a rather short 20" #5 Kreiger barrel on it. And yes the original stock can be used you may need to recut the barrel channel for a better fit for a heavier barrel.

 

[BrownBear]

I had a 458x2 for several years. Nice round, but you're right. It's a ballistic twin for the Marlin, and with a couple of 458 Winnies in the house I didn't see the need to keep it. I do kinda mourn it's departure on one account: It was an unbelievably accurate cast bullet gun. You could cut ragged holes with it at 100 yards all day long. If putting the 450 Marlin in a bolt let you do things like that, it would be an interesting little project. And a simple rebarrel would cut costs enough to make it attractive.

 

[forty below]

good advice

good advice

thanks for the input.

from other postings you can see i currently have both a ruger mkII in 350 rem mag and a marlin 1895 gs.

one thought bouncing in my head is to sell the 1895 and buy a second ruger MKII to build a bolt action 450 marlin. i like the lever action, but am more comfortable with bolt action rifles, plus it looks like 450 marlin ammo can be gotten for lower prices than 45/70 ammo.

i saw one of these on the sisk rifles website that started my interest. i think it was called the bradley/yukon.

can i tell pac-nor "make this 350 rem mag a 450 marlin in a #5 barrel, no fancy stuff, keep barrel at 22 inches and fit to my factory stock"?

thanks for the input.

forty below

 

[ak257]

40, here's the .450M that Clark built for me on the Ruger 77.

 

[forty below]

very nice.

 

[Reed]

7+1 Shot, .450 Marlin Bolt Option?

7+1 Shot, .450 Marlin Bolt Option?

Steyr makes one called the Big Bore:
It can be had in a 7+1 shot version, called the HC, for High Capacity.
A bit spendy, but appears quite well made.

http://www.steyr-mannlicher.com/en/hunting-weapons/mannlicher-big-bore/

 

[Matt]

Sounds like a Winchester WSSM action would be just about perfect for a project like this. And they are cheap.

 

[lester]

Pac-Nor can thread and chamber your new barrel to be right on the money if you give them the precise measurements from the boltface to the receiver shoulder and from bolt nose to receiver shoulder. There are even some AR gunsmiths doing .450 Marlin uppers for the AR-10; now that's a thumper!