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How and What to Convert a 25 Rimfire Barrel To? (Read 4116 times)

S99VG Oldtimer Offline Posts: 514 Location: CA Joined: Feb 1^st, 2020	How and What to Convert a 25 Rimfire Barrel To? Jul 17^th, 2021 at 10:46am	Print Post
	I've talked about this beofre on the ASSRA site but last night the subject came up in a conversation with a buddy. I have a very light contour Stevens 25 rimfire barrel off a 044 1/2 that I would like to put back into use. He suggested I reline the barrel and we explored 22 rimfire and centerfire liners with the latter looking like it was way too much for my barrel. The muzzle measures 9/16-in and my orginal thought was to use one for a 22 Hornet conversion. But then the 17 Hornady came up, which seems like a reasonable solution. Has anyone converted a 25 rimfire in this manner and what were your experiences? Thanks in advance!


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Bulseyetom Frequent Elocutionist Offline Posts: 1025 Location: Santa Maria, Ca Joined: Oct 31^st, 2010	Re: How and What to Convert a 25 Rimfire Barrel To? Reply #1 - Jul 17^th, 2021 at 10:50am	Print Post
	My 044 1/2 has been rebarreled sometime in the distant path to a 218 Bee. I don't load it hot and it shoots lights out with jacketed bullets. Tom


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S99VG Oldtimer Offline Posts: 514 Location: CA Joined: Feb 1^st, 2020	Re: How and What to Convert a 25 Rimfire Barrel To? Reply #2 - Jul 17^th, 2021 at 11:22am	Print Post
	Bulseyetom wrote on Jul 17^th, 2021 at 10:50am: My 044 1/2 has been rebarreled sometime in the distant path to a 218 Bee. I don't load it hot and it shoots lights out with jacketed bullets. Tom Was it a new barrel or a relined original? Thanks


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JLouis Frequent Elocutionist Offline Posts: 10625 Joined: Apr 8^th, 2009	Re: How and What to Convert a 25 Rimfire Barrel To? Reply #3 - Jul 17^th, 2021 at 12:43pm	Print Post
	The muzzle end of the barrel being so small it might possibly raise a concern depending on the diameter of the liner wanting to be used.

	" It Is Better To Now Have Been A Has Been Than A Never Was Or A Wanna Be "
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S99VG Oldtimer Offline Posts: 514 Location: CA Joined: Feb 1^st, 2020	Re: How and What to Convert a 25 Rimfire Barrel To? Reply #4 - Jul 17^th, 2021 at 1:20pm	Print Post
	JLouis wrote on Jul 17^th, 2021 at 12:43pm: The muzzle end of the barrel being so small it might possibly raise a concern depending on the diameter of the liner wanting to be used. It did with the center fire liner. I can’t remember the diameter at this moment but it effectively reduced the muzzle end to a thin veneer.


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Sure shot Frequent Elocutionist Offline Posts: 1166 Location: East central Iowa Joined: Jun 22^nd, 2020	Re: How and What to Convert a 25 Rimfire Barrel To? Reply #5 - Jul 17^th, 2021 at 1:48pm	Print Post
	If the .25 rimfire bore is still decent in your rifle, maybe leave it alone and re-barrel it to .17 wsm. You should be able to use your .25 rimfire extractor, breech block and firing pin with .17 wsm. Also you would retain your original barrel for collectibility, as there wasn’t many 044 1/2’s made.


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S99VG Oldtimer Offline Posts: 514 Location: CA Joined: Feb 1^st, 2020	Re: How and What to Convert a 25 Rimfire Barrel To? Reply #6 - Jul 17^th, 2021 at 2:41pm	Print Post
	Sure shot wrote on Jul 17^th, 2021 at 1:48pm: If the .25 rimfire bore is still decent in your rifle, maybe leave it alone and re-barrel it to .17 wsm. You should be able to use your .25 rimfire extractor, breech block and firing pin with .17 wsm. Also you would retain your original barrel for collectibility, as there wasn’t many 044 1/2’s made. That's pretty much the plan. According to Gail at CPA the 25 extractor will also work for the 17. Any thoughts on the strength of the liner in the barrel? Should I have any concerns with a 17 Hornady liner shooting loose in such a thin barrel? Thanks


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JLouis Frequent Elocutionist Offline Posts: 10625 Joined: Apr 8^th, 2009	Re: How and What to Convert a 25 Rimfire Barrel To? Reply #7 - Jul 17^th, 2021 at 4:27pm	Print Post
	I would try and run that by John Taylor on this site and hopefully he might even chime in. Quite few folks her speak very highly about his liner work.

	" It Is Better To Now Have Been A Has Been Than A Never Was Or A Wanna Be "
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craigd Frequent Elocutionist Offline Posts: 2058 Location: midwest Joined: Feb 22^nd, 2009	Re: How and What to Convert a 25 Rimfire Barrel To? Reply #8 - Jul 17^th, 2021 at 5:52pm	Print Post
	Maybe, depending on the sights, go with 22LR? If, it'll wear barrel sights, it won't be easy to get the full accuracy potential out of a modern 17 rimfire, but it'll cost quite a bit more to feed it, for a fun plinker? Best of luck with the project.


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uscra112 Frequent Elocutionist Offline Posts: 4079 Location: Switzerland of Ohio Joined: May 7^th, 2007	Re: How and What to Convert a 25 Rimfire Barrel To? Reply #9 - Jul 17^th, 2021 at 7:44pm	Print Post
	Sure shot wrote on Jul 17^th, 2021 at 1:48pm: If the .25 rimfire bore is still decent in your rifle, maybe leave it alone and re-barrel it to .17 wsm. You should be able to use your .25 rimfire extractor, breech block and firing pin with .17 wsm. Also you would retain your original barrel for collectibility, as there wasn’t many 044 1/2’s made. Double dittos.

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jimmy Senior Forum Member Offline Now available in Oklahoma. Posts: 466 Location: Skiatook Joined: May 12^th, 2009	Re: How and What to Convert a 25 Rimfire Barrel To? Reply #10 - Jul 18^th, 2021 at 3:17pm	Print Post
	25 hornet? Seems like I read here it's possible to use a 22 hornet reamer with an appropriate sized pilot. You will have to trim the brass to 25 RF length. Of course it would require converting to CF.


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John Taylor Frequent Elocutionist Offline Posts: 1850 Location: Lewiston, ID Joined: Oct 23^rd, 2006	Re: How and What to Convert a 25 Rimfire Barrel To? Reply #11 - Jul 18^th, 2021 at 6:43pm	Print Post
	The liner for 17 is 3/8" diameter. 22 RF liners come in several sizes, 5/16", 3/8" and 1/2". Sometimes the 25 RF firing pin works with 22 LR. With the high cost of ammo I have converted many to 22 LR. If the liner is installed correctly they is no chance that it will come loose.

	John Taylor Machinist/gunsmith
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Sure shot Frequent Elocutionist Offline Posts: 1166 Location: East central Iowa Joined: Jun 22^nd, 2020	Re: How and What to Convert a 25 Rimfire Barrel To? Reply #12 - Jul 18^th, 2021 at 7:38pm	Print Post
	One problem you might have, with a 3/8” liner, I think you would run into the front sight dovetail when drilling, also possibly even drilling for a 5/16” liner. Those 044 1/2 barrels have a small diameter at the muzzle. My 044 1/2 .25 RF is .620 at the muzzle.


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S99VG Oldtimer Offline Posts: 514 Location: CA Joined: Feb 1^st, 2020	Re: How and What to Convert a 25 Rimfire Barrel To? Reply #13 - Jul 19^th, 2021 at 12:07am	Print Post
	Sure shot wrote on Jul 18^th, 2021 at 7:38pm: One problem you might have, with a 3/8” liner, I think you would run into the front sight dovetail when drilling, also possibly even drilling for a 5/16” liner. Those 044 1/2 barrels have a small diameter at the muzzle. My 044 1/2 .25 RF is .620 at the muzzle. Yeah, as I said earlier it just about turns the muzzle end into a veneer. However I came across a post on the cast boolit forum that talked about making centerfire cases for the 25 Stevens out of cut down 22 Hornet brass and sizing down 25 caliber bullets to fit the 251 bore. I want to convert the 044 1/2 to centerfire and this may be the most practical route to go. Thanks! PS - I just read back a couple posts and it sounds like jimmy is pretty much saying the same thing


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S99VG Oldtimer Offline Posts: 514 Location: CA Joined: Feb 1^st, 2020	Re: How and What to Convert a 25 Rimfire Barrel To? Reply #14 - Jul 19^th, 2021 at 10:02am	Print Post
	Per the Cast Boolit post


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