Caliber Conversion

Kelly J · September 28, 2006, 03:41 PM

I've looked on line for a Compairison Chart to show what Brass Case could be Converted From?, to 10mm Mag. Brass

tINY · September 28, 2006, 08:01 PM

Since it's a lengthened 10mm, you can't convert anything to 10mm mag

Buy some cases from Starline.

-tINY

**Mike Irwin** · September 29, 2006, 12:37 AM

Possible candidates would be:

.225 Winchester
.25-35/.30-30/.32 Spl./.38-55 Winchester
.25/.30/.32 Remington

And a few other extremely obsolete cartridges.

Of course you'd have to do a lot of work on most of those -- turning off the rim, turning a new extractor groove, possibly thinning the rim, shortening the case, and reaming it.

Hardly worth the effort.

**Bud Helms** · September 29, 2006, 06:16 AM

Mike,

If a .38-55 would work, might a .375 Winchester suffice?

**Mike Irwin** · September 29, 2006, 09:44 AM

"If a .38-55 would work, might a .375 Winchester suffice?"

Yes. I missed that one.

In fact, it might be the best choice of the group by far.

The .375 was designed to operate at significantly higher pressures than any of the other cartridges I've listed (with the possible exception of the .225) so the case head/web area might be a bit thicker.

tINY · September 30, 2006, 02:04 AM

I stand corrected - of course you could draw them or turn them from raw brass too.....

-tINY

September 28, 2006, 03:41 PM	#1
Kelly J Senior Member Join Date: April 29, 2006 Location: Blue Springs, MO Posts: 383	Caliber Conversion I've looked on line for a Compairison Chart to show what Brass Case could be Converted From?, to 10mm Mag. Brass __________________ "If ye love wealth better than liberty, the tranquility of servitude than the animating contest of freedom, go from us in peace. May your chains sit lightly upon you, and may posterity forget that ye were our countrymen!" --Samuel Adams

September 29, 2006, 12:37 AM	#3
Mike Irwin Staff Join Date: April 13, 2000 Location: Northern Virginia Posts: 41,380	Possible candidates would be: .225 Winchester .25-35/.30-30/.32 Spl./.38-55 Winchester .25/.30/.32 Remington And a few other extremely obsolete cartridges. Of course you'd have to do a lot of work on most of those -- turning off the rim, turning a new extractor groove, possibly thinning the rim, shortening the case, and reaming it. Hardly worth the effort. __________________ "The gift which I am sending you is called a dog, and is in fact the most precious and valuable possession of mankind" -Theodorus Gaza Baby Jesus cries when the fat redneck doesn't have military-grade firepower.

September 29, 2006, 09:44 AM	#5
Mike Irwin Staff Join Date: April 13, 2000 Location: Northern Virginia Posts: 41,380	"If a .38-55 would work, might a .375 Winchester suffice?" Yes. I missed that one. In fact, it might be the best choice of the group by far. The .375 was designed to operate at significantly higher pressures than any of the other cartridges I've listed (with the possible exception of the .225) so the case head/web area might be a bit thicker. __________________ "The gift which I am sending you is called a dog, and is in fact the most precious and valuable possession of mankind" -Theodorus Gaza Baby Jesus cries when the fat redneck doesn't have military-grade firepower.

September 28, 2006, 08:01 PM	#2
tINY Senior Member Join Date: April 26, 2005 Location: Orygun Posts: 2,589	Since it's a lengthened 10mm, you can't convert anything to 10mm mag Buy some cases from Starline. -tINY

September 29, 2006, 06:16 AM	#4
Bud Helms Senior Member Join Date: December 31, 1999 Location: Middle Georgia, USA Posts: 13,198	Mike, If a .38-55 would work, might a .375 Winchester suffice?

September 30, 2006, 02:04 AM	#6
tINY Senior Member Join Date: April 26, 2005 Location: Orygun Posts: 2,589	I stand corrected - of course you could draw them or turn them from raw brass too..... -tINY