Looking for info on 300Mashburn Short Mag

LIWolverine

Well Known Rokslider
Joined
Apr 3, 2017
Messages
790
Location
Magnolia, Texas
Does anyone have any info at all on the 300 Mashburn Short Mag?? I have a custom Sako that I inherited. It is roll marked 300 Hoffman but through 3 years of research and by casting the chamber it is not an actual 300 Hoffman Mag. It's more like a 300 Hoffman Short Mag. Through more research it is so unbelievably close to 30-338 Win. The shoulder is just set back a bit further so the neck is longer than the 30-338. I'm just grasping for anything I can get on info for the 300 Mashburn short. Through reading it seems the Mashburn short may be it. It's tough to find info on a round that doesn't exist so if it is the Mashburn I at least have some real load info I can go off.

Thanks for any help.
Left to right. My round. 300 win Mag. 300 Hoffman Mag
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b95ed4732c32bed69bf3af5e8b7d1043.jpg



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Do you have a copy of the cartridges of the world book? I can't find mine right now. It has all the drawings in there. A good place to look is the firing line, the high road and accurate shooter forum. Good luck.
 
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LIWolverine

LIWolverine

Well Known Rokslider
Joined
Apr 3, 2017
Messages
790
Location
Magnolia, Texas
Do you have a copy of the cartridges of the world book? I can't find mine right now. It has all the drawings in there. A good place to look is the firing line, the high road and accurate shooter forum. Good luck.

I definitely need to get one.


Reloading Data .300 Mashburn Short Magnum (P.O. Ackley Data) Metallic

Also look in handloaders digest and p.o. ackleys book on Wildcats and loadings.

Man thank you. That's the best info I'm come across.



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