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McShooty · January 10, 2013, 12:08 PM

The magazine of the 1891 has springy lips which admit a round simply by pushing it in and retaining it with the spring tension. This works quite well with the 7.65, which has a shoulder diameter of .429." The .300 Sav, on the other hand, has a shoulder diameter of .447" and is a considerably shorter cartridge. The shortness and the almost .02 greater diameter of the .300 causes me to wonder about how it would function. You could try a .300 case and easily find out, I guess. The .300 Sav offers no ballistic advantage over the 7.65 and factory .300 is quite pricey. I have bought factory PPU ammo for about $16 per box.

January 10, 2013, 12:08 PM	#6
McShooty Senior Member Join Date: January 4, 2012 Location: Northern Missouri Posts: 480	The magazine of the 1891 has springy lips which admit a round simply by pushing it in and retaining it with the spring tension. This works quite well with the 7.65, which has a shoulder diameter of .429." The .300 Sav, on the other hand, has a shoulder diameter of .447" and is a considerably shorter cartridge. The shortness and the almost .02 greater diameter of the .300 causes me to wonder about how it would function. You could try a .300 case and easily find out, I guess. The .300 Sav offers no ballistic advantage over the 7.65 and factory .300 is quite pricey. I have bought factory PPU ammo for about $16 per box.