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GPR Sporter (Read 8174 times)

Kenfuscious KCA Forum Member Offline Krag Enthusiast! Posts: 7 Location: Tulsa Joined: Apr 5^th, 2013 Gender:	GPR Sporter Apr 5^th, 2013 at 7:09pm	Print Post
	I bought a Sporter on an online auction the other day and turned out to a GPR converted back to 30-40. Were the actions proofed. Did the hole in the reciever indicate a lack of proof? TIA, Ken


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Top Dean KCA Forum Member Offline Krag Enthusiast! Posts: 299 Location: Richmond, VA Joined: Apr 22^nd, 2012 Gender:	Re: GPR Sporter Reply #1 - Apr 7^th, 2013 at 12:11pm	Print Post
	a few pictures of what you are asking would help!


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Ned Butts KCA Forum Admin KCA Official Member Offline Krag enthusiast! Posts: 525 Location: western catskills NY Joined: Apr 1^st, 2002 Gender:	Re: GPR Sporter Reply #2 - Apr 7^th, 2013 at 1:24pm	Print Post
	The hole in the receiver wall was for the ejector and is the only obvious indication of GP


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Dick Hosmer KCA Official Member Offline Collector of Springfield Arms, 1865-1915 Posts: 1862 Location: Northern California Joined: Nov 20^th, 2005 Gender:	Re: GPR Sporter Reply #3 - Apr 7^th, 2013 at 1:47pm	Print Post
	Ned Butts wrote on Apr 7^th, 2013 at 1:24pm: The hole in the receiver wall was for the ejector and is the only obvious indication of GP How about the cut-down action rail, and the .22 CAL. stamping??


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reincarnated KCA Forum Member Offline Krag Enthusiast! Posts: 562 Joined: Mar 11^th, 2012	Re: GPR Sporter Reply #4 - Apr 7^th, 2013 at 5:00pm	Print Post
	Were the actions heat treated? Based on my limited experience (one rifle), that one does not have the slick bolt operation I normally expect with a Krag. Since the GPR was intended as a .22 rimfire from the outset, there would be no need for heat treating.


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Dick Hosmer KCA Official Member Offline Collector of Springfield Arms, 1865-1915 Posts: 1862 Location: Northern California Joined: Nov 20^th, 2005 Gender:	Re: GPR Sporter Reply #5 - Apr 7^th, 2013 at 6:09pm	Print Post
	I believe that existing regular (hardened) actions were modified, not purpose-built for the .22. Somewhere I have seen correspondence regarding annealing them to allow the caliber stamping. What else was done to them, I do not know, but surely removing a portion of the rail would have required softening in that area as well. As to whether they were re-hardened, that would probably not have been considered necessary, since the action was monstrously strong for a .22RF, no matter what. My GPR bolt is 'sticky', but I attribute that to a less-than-perfect plate system, which binds slightly.


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reincarnated KCA Forum Member Offline Krag Enthusiast! Posts: 562 Joined: Mar 11^th, 2012	Re: GPR Sporter Reply #6 - Apr 8^th, 2013 at 1:40am	Print Post
	The GPRs have very high serial numbers. IIRC, they were made 1906-1908, after regular Krag production was phased out.� Somewhere I read that they were a special run and because they were .22s, Springfield did not have to pay a royalty on them.� Can anyone shed some more light on this?


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Kenfuscious KCA Forum Member Offline Krag Enthusiast! Posts: 7 Location: Tulsa Joined: Apr 5^th, 2013 Gender:	Re: GPR Sporter Reply #7 - Apr 8^th, 2013 at 3:43pm	Print Post
	Still learning my way around this website.Bolt action is as smooth as my other Krags. I'm in need of a Pacific rear sight if anyone has one to sell or trade. I have quite a number of vintage sights. (You need to *Login* to view media files and links)


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butlersrangers KCA Forum Member Offline Krag Enthusiast! Posts: 6330 Location: Michigan Bi-Peninsular&Proud Joined: Oct 7^th, 2009	Re: GPR Sporter Reply #8 - Apr 8^th, 2013 at 9:23pm	Print Post
	kenfuscious: Your Pacific base has a vertical hole for an adjustment shaft that is part of the missing upper portion of the sight. Is this hole on your base smooth on the inside or threaded?


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Kenfuscious KCA Forum Member Offline Krag Enthusiast! Posts: 7 Location: Tulsa Joined: Apr 5^th, 2013 Gender:	Re: GPR Sporter Reply #9 - Apr 9^th, 2013 at 2:29pm	Print Post
	Pretty sure it's smooth.


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butlersrangers KCA Forum Member Offline Krag Enthusiast! Posts: 6330 Location: Michigan Bi-Peninsular&Proud Joined: Oct 7^th, 2009	Re: GPR Sporter Reply #10 - Apr 9^th, 2013 at 9:58pm	Print Post
	I could help you with some 'upper' parts if you have the K-2 Pacific base that is threaded for elevation adjustment.


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Kenfuscious KCA Forum Member Offline Krag Enthusiast! Posts: 7 Location: Tulsa Joined: Apr 5^th, 2013 Gender:	Re: GPR Sporter Reply #11 - Apr 10^th, 2013 at 1:25pm	Print Post
	Thanks for the offer! I confirmed the hole is not threaded. If possible I could thread the hole for the screw type elevation adjuster. Do you know the screw size? Regards, Ken


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reincarnated KCA Forum Member Offline Krag Enthusiast! Posts: 562 Joined: Mar 11^th, 2012	Re: GPR Sporter Reply #12 - Apr 10^th, 2013 at 4:26pm	Print Post
	There used to be a Lyman receiver sight, intended for the Mannlicher type rifles, that allowed the arm bearing the sight to pivot. Could your mount be intended for something like that?


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butlersrangers KCA Forum Member Offline Krag Enthusiast! Posts: 6330 Location: Michigan Bi-Peninsular&Proud Joined: Oct 7^th, 2009	Re: GPR Sporter Reply #13 - Apr 11^th, 2013 at 10:57pm	Print Post
	Kenfuscious:� I checked the threads on the Pacific K-2 'upper' with my thread gauge.� The thread accepted the 24tpi and 26tpi blades closely, but not fully.� I'm guessing the elevation shaft may be 25tpi.� Unusual, but may make sense in a micrometer adjustment.� The maximum diameter of the threads is .185".� I tried a 10-24 screw in the threaded hole in the base.� It engaged several threads before jamming.� I believe the K-2 sight used a peculiar thread.� I have also noticed that there are surprising variations in K-1 Pacific bases which effects hole positioning.� There must have been little gauging and a lot of hand fitting when they made these sights.� I would recommend getting a Pacific sight as a complete unit or at least trying an 'upper' on your base for function, before buying.


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Kenfuscious KCA Forum Member Offline Krag Enthusiast! Posts: 7 Location: Tulsa Joined: Apr 5^th, 2013 Gender:	Re: GPR Sporter Reply #14 - Apr 15^th, 2013 at 1:52pm	Print Post
	I have found a complete sight less the shaft that inserts in the magazine cutoff hole. Hopefully I can install the one in the base I have and end up with a complete sight. If not I'll just make a new shaft.


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