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#1812771 - 11/20/07 04:14 PM Case capacity RCM VS WSM
noKnees Online   content
Campfire Guide

Registered: 11/09/05
Posts: 4491
Loc: johnstown, NY/Bloomfield CT
Subject says it..

How do the case capacities compare 300 RCM vs 300WSM?

Basicly I am comsidering a 35 cal wildcat (350WSM, 350RCM)
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CI16728
#1813024 - 11/20/07 05:50 PM Re: Case capacity RCM VS WSM [Re: noKnees]
458 Lott Offline
Campfire 'Bwana

Registered: 01/29/01
Posts: 13891
Loc: Conundrum, Alaska
350 WSM is the 350 Sambar, might want to look it up.

I considered re-chambering my Ruger 350 rem mag to a 350 WSM, but then I shot it pushing 225's 2700 fps. I just have no need to push 250's 2700 fps from a lightish rifle. Something to consider. And if you aren't building a light rifle, no real reason to use the WSM platform.
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I'm not a gunwriter, that's 458 win. I'm just a gun-nut in Alaska.

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#1813104 - 11/20/07 06:14 PM Re: Case capacity RCM VS WSM [Re: noKnees]
WhelenAway Offline
Campfire Guide

Registered: 01/31/06
Posts: 2970
I don't know what the difference is, but the WSM case is .555 at the web, and the RCM case is .532. The WSM case is 2.1" long and the RCM case is 2.015".

So the WSM case appears to have a fair bit more capacity.


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Remember the good old days, when you felt lucky to have a rifle and used it for everything ? 458Win

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#1820432 - 11/24/07 10:06 AM Re: Case capacity RCM VS WSM [Re: WhelenAway]
SlowHand Offline
Campfire Regular

Registered: 03/23/03
Posts: 302
I kind of like the idea of a short action 338 that would be between the 338-06 and the 338 win. Maybe the thinner cartridge will feed a little smoother than the WSM cartridges. Who knows.

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#1821117 - 11/24/07 05:56 PM Re: Case capacity RCM VS WSM [Re: noKnees]
Gasman Offline
Campfire Regular

Registered: 06/19/04
Posts: 970
Two or three years ago, an Australian hunting magazine named Guns and Game ran a very informative series of articles describing how they designed, built, and hunted with a rifle chambered in the 350 Sambar round. I was able to obtain back issues from them thru their website. Here's the link if you want to pursue it further:

Guns and Game magazine
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#1821119 - 11/24/07 05:58 PM Re: Case capacity RCM VS WSM [Re: SlowHand]
WhelenAway Offline
Campfire Guide

Registered: 01/31/06
Posts: 2970

Nothing wrong with a short action 338-06 +P. I am kind-of interested myself.

My guess is that feeding would be smoother than the WSM.

Per the reviews, in factory loaded form, it gives up nothing to the 338WM (though I am sure it does with heaviest bullets).

Hand-loads are likely to be a different proposition, with performance more like a 338-06 +P, since the propellants used in the factory ammo aren't available to the handloader.


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#1821145 - 11/24/07 06:09 PM Re: Case capacity RCM VS WSM [Re: Gasman]
WhelenAway Offline
Campfire Guide

Registered: 01/31/06
Posts: 2970

Here is some more 350WSM information:

350WSM or 35 Sambar


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#1821213 - 11/24/07 06:44 PM Re: Case capacity RCM VS WSM [Re: WhelenAway]
gerrygoat Offline
Campfire Regular

Registered: 09/12/07
Posts: 1490
Loc: B.C.
If I were a betting man I'd say the case capacity of the 338 RCM would be very similar to the 350 Rem Mag. The 350 has a longer case which might make up for the slightly fatter but shorter RCM .

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#1821932 - 11/25/07 05:56 AM Re: Case capacity RCM VS WSM [Re: WhelenAway]
Brad Offline
Campfire Kahuna

Registered: 10/31/00
Posts: 21819
 Originally Posted By: WhelenAway
I don't know what the difference is, but the WSM case is .555 at the web, and the RCM case is .532. The WSM case is 2.1" long and the RCM case is 2.015".

So the WSM case appears to have a fair bit more capacity.


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Agreed.

I'm struggling to understand how two less in the magazine and poorer feeding with minimal velocity gain makes this new case a worthy choice over an 06-based round...
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Cartridges are more alike than different.
308 Win... kicks a little, kills a lot.
30-06... The Everyman's Elk Cartridge.

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#1821965 - 11/25/07 06:25 AM Re: Case capacity RCM VS WSM [Re: Brad]
kutenay Offline
Campfire Outfitter

Registered: 03/15/04
Posts: 7739
OH NO!!! More practical, experience based opinion!!!!

This will NEVER do, how can we accept the antique rounds from long ago when ANY hip, trendy GenXer just KNOWS that wizzums, Ultragags and whatevers ARE the BEST, man!

The next thing we will be told is that there have been NO real improvements on the .45 Colt, .45ACP, .30-06, .375H&H and .450-3.25Nitro EVER.....the whole dang industry will collapse!!!!

Juat got my final Grizzly/packing rifle yesterday, a plain, old P-64 in .375H&H, 20"sts. tube, Recnagel irons, QD mts. 2.4xC Leupy, Micky stock and Decelerator...probably gonna get et in northern BC next summer as it is not a .375Ruger, Ultramag or a .416 Lazzemacaroni Blastum Super Mag...and wasn't "designed" by Col. Alphasoup! Horrors, what shall I ever do?

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