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Clemson · March 16, 2007, 09:12 AM

Wow! Thanks for that explanation, Jim. Do you have any idea why the Springfield arsenal chose to use square threads on the barrels?

By the way, there are a few Mausers that do have the extractor cuts -- the Yugo Model 48 and the 24/47's. I have no idea what sequence they used for machining the cuts. From the machine marks, the extractor grooves were cut with an end mill. When I rebarrel one, I chamber the barrel in the lathe, then finish ream it installed on the receiver, then mark the location of the extractor cut, pull the barrel, and cut the groove. I doubt that the military armorers want to go to all that trouble!

Clemson

March 16, 2007, 09:12 AM	#2
Clemson Senior Member Join Date: March 9, 2001 Location: Greenwood, SC Posts: 875	Wow! Thanks for that explanation, Jim. Do you have any idea why the Springfield arsenal chose to use square threads on the barrels? By the way, there are a few Mausers that do have the extractor cuts -- the Yugo Model 48 and the 24/47's. I have no idea what sequence they used for machining the cuts. From the machine marks, the extractor grooves were cut with an end mill. When I rebarrel one, I chamber the barrel in the lathe, then finish ream it installed on the receiver, then mark the location of the extractor cut, pull the barrel, and cut the groove. I doubt that the military armorers want to go to all that trouble! Clemson __________________ NRA Endowment Member, NRA Certified Instructor CWP Holder US Army veteran Gunsmith www.boltandbarrel.com