what wildcat's are out there made on a shortened magnum cartridges?

The ism cartridges are not based off the 404 Jeffries like the Remingtons were. Slightly smaller in diameter.

Hmmmmmmmm !

Winchester Short Magnum, or WSM, refers to a family of rebated rim bottlenecked centerfire short magnum cartridges developed in the early 2000s by the U.S. Repeating Arms Company, the maker of Winchester rifles and one of the oldest firearms manufacturers in the United States. All of the WSM cartridges are based on the .404 Jeffery non-belted magnum cartridge which is shortened to fit a short rifle action (such as a .308 Winchester). RJ
 
The ism cartridges are not based off the 404 Jeffries like the Remingtons were. Slightly smaller in diameter.

Hmmmmmmmm !

Winchester Short Magnum, or WSM, refers to a family of rebated rim bottlenecked centerfire short magnum cartridges developed in the early 2000s by the U.S. Repeating Arms Company, the maker of Winchester rifles and one of the oldest firearms manufacturers in the United States. All of the WSM cartridges are based on the .404 Jeffery non-belted magnum cartridge which is shortened to fit a short rifle action (such as a .308 Winchester). RJ

that's a quote without source to substantiate it, RJ. where did you get that from? once a credible source has been shared, it might counter Neilm's statement. :yingyang:
 
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22 Vampire killer.. 17 werewolf. ... 22 pussy cat.
Real or just dreamed up! .458 cases and .44 mag so the story goes.
awww, so cute!

LoL, also reminds me of the .22-50BMG April Fools of old.

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that's a quote without source to substantiate it, RJ. where did you get that from? once a credible source has been shared, it might counter Neilm's statement. :yingyang:

One of the Shooting Times writers, Jamison I think, made the original Wildcats that would become the wsm line using the 425 Westley Richards case. Wanted the rebated rim, if memory serves. - dan
 
not being rhetorical...I guess the .300 Win Mag cartridge never took off for wildcat cartridges?

any thoughts as to why?

I believe you are fishing for an answer as to why the standard .300 Win Mag case was not frequently used for shortening to make wildcat cartridges, if so the answer is simple. Humans are lazy and most of us are cheap too, so fitting a magnum sized bolt face to a short action and getting it feed reliably was a lot more time, effort and cash than folks wanted to spend. For a long time the only rifles meeting this criteria from factory were chambered for the 6.5 and .350 Remington as has been mentioned in this thread. These were wildcatted to other calibers and often .300 win mag brass was used for cases since it was readily available.
As for the .300 Win Mag its self being used for wild cats it most certainly has been. A host of 7mm's with minor variations the, most notable of which are the Mashburn and practical, and many more from as small as you can think of to as large as the case will hold. Odds are if you can dream it someone has already done it or done it with minor variations. I found a few cases one time with pockets that would no longer hold a primer, stamped .300 Winchester and appearing to be necked down to accept a .224 diameter bullet. I'd like to meet the owner to find out what bullets he was shooting and how fast and just how short barrel life was.
 
not being rhetorical...I guess the .300 Win Mag cartridge never took off for wildcat cartridges?

any thoughts as to why?

Probably because the .300 Win is practically a Johnny come
Lately compared to many of the other belted cases. The .264, 308 Norma, .338, and 458 all came first. The Weatherbys came before that.
That doesn't mean that there aren't wildcats done off the .300 Win case. Just in my own collection I've got 6.5-300; 7-300 and have shot many 458-300s in my Lott. The 7-300 and the Kiwi 7mm Practical are the ones to watch. If anything the 7-300 is more practical than the Practical is; but they both excel in pushing about as much powder as really wants to go down a 7mm hole while still being very 3.600 magazine friendly with the long high BC bullets that are in vogue now. Doing it with cheap brass is a bonus.
 
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