Home Forums Hunting & Shooting Custom Rifles & Wildcats 450M conversions.

Anyone know of anyone wildcatting this case. I've been thinking about shortening the 450M to about 1.9inches, give it a sharp shoulder angle ~40�, like an AI and put a 7mm or 30 cal flatnose on one and give it a go. I posted this idea on another website with no luck. Then my case capacity was way too high(~70gr) which would blow the Marlins action to pieces. So I shortened the case to 1.9 and get 60gr for the 7mm and 61grs for the 30cal. I still figure I'm too high but for the general idea I thought I might be on the right track. I've pitched the idea to a couple of well known gunsmiths and they like the idea. One is working on a 6.5mm based off of the 450 case, but I would like to go with the 7mm or 30 cal if possible. I can always shorten the case up to reduce case capacity, pressures, etc, but would rather stay about where its at. Anyone have any thoughts on this kind of wildcat?

sounds like the "X2" case. i.e 458x3, 416x2 etc. standard 7mag case cut to 2" and necked to whatever caliber you choose....
brass is mucho cheaper and dies are out there i believe....
woofer

woofer,

Unsure of the "X2" case but would like to know more. I can see the 7mag cut down to inch being very close to what I was going for w/the 450M case. So far no one is discussing this so my thoughts are that either it's too far fetched or no one I guess is really interested. I know that pressure would probably be a problem but with the properly built case I was hoping that it could be done. Oh by the way Wildcatter and Blackhawk45 are the same person, me. I'm just a wildcatter wannabe but couldn't see calling myself a wildcatter when this is my first attempt at it. If it's possible to do. Anyway does any one else have any thoughts on this kind of conversion for the 1895M rifle, necking the 450M case down to 7mm?

There's no problem using the full-length 450 case and necking it to whatever. Or trimming a Win Mag case to 450 length and necking. You can blow up any rifle in any chambering, by using the wrong powder. You need to understand the limits of the action, and keep it well under, in this case somewhere under 40k psi.
Figure something a little less than 7mm-08 in muzzle speed, and then figure the lower BC and greater drop of FN bullets, and that's about what you're describing. Maybe 2700fps with 140g bullets.
As for case capacity, bigger is better in this case. The more powder you can get behind the bullet, the faster it will go. For a low-pressure load in a lever gun, you need a slower powder generally, than in a bolt-action, say. But in any given pressure range, the more powder room, the faster you can make the bullet go.
To wit, use a 404 J case, trimmed to the right length and it'll go faster than this H&H case.

Wildcatting using a lever-action is a whole other deal and I would suggest you get on a "lever'gun" board and give it a try.

FWIW:

Why would a guy go to the trouble? Buy a 270, 7mm, or 300 WSM in a BLR and be done with it.

BMT

my bad. i thought we were discussing bolt guns. as far as wildcatting a lever marlin i dont know.

pressure being the big concern, i would look at what is out there now for both wildcats and factory stuff. there is a zillion rimmed wildcats. wht will work for max in the marlin is not my call.

the blr comes to mind as mentioned above if your open to other brands...
woofer

BMT,
If I have to explain it to you, you wouldn't get it any way.

woofer,
I would rather stick to the Marlin. The idea is still in the works and brand new to me, anyways. I have talked to another person that is considering converting it to a 6.5mm so I guess time will tell.

JDW

I shoulda' figgered . . . . .

Just lettin' you know about the obvious "solution" to the "problem."

But it appears that the problem was not ballistic . . . . . . . .<img src="/ubbthreads/images/graemlins/grin.gif" alt="" />

Sometimes, ya gotta do, what ya gotta do . . . .

Have fun,

BMT

BMT,

I have one bolt action left and I am now trying to trade it off for another leveraction. I have an accurate 307Win. a hard hitting 1895G and a short range 30/30. Now I just need a good 7mm leveraction to complete my battery. Oh yeah and I need a 22, 22mag, 250Sav, 7/30, etc. <img src="/ubbthreads/images/graemlins/smile.gif" alt="" />

JDW