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25 rf to 25/20ss centerfire (Read 4121 times)

norb68 Participating Member Offline Posts: 29 Location: Beloit, WI Joined: Apr 27^th, 2011	25 rf to 25/20ss centerfire Apr 12^th, 2015 at 11:39pm	Print Post
	Is it possible to re chamber a stevens 44 barrel from .25 rimfire to 25/20 SS centerfire? Are the bores the same size? Any other input would be appreciated.


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BP Frequent Elocutionist Offline Posts: 8039 Location: Westside Joined: Aug 27^th, 2006	Re: 25 rf to 25/20ss centerfire Reply #1 - Apr 12^th, 2015 at 11:56pm	Print Post
	You should slug your existing barrel to see what it actually has for groove/bore dimensions, as there is a fair amount of variation with the 25 RF's. Another consideration is twist - Stevens cataloged 13" twist for the 25-20 SS, and 17" for the 25 RF. Will the slower twist work for you?

	There are three kinds of men: The ones that learn by reading, the few who learn by observation, and the rest who have to pee on the electric fence and find out for themselves. Proud Noodlehead
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norb68 Participating Member Offline Posts: 29 Location: Beloit, WI Joined: Apr 27^th, 2011	Re: 25 rf to 25/20ss centerfire Reply #2 - Apr 13^th, 2015 at 12:09am	Print Post
	I was just going to use it for plinking at 50 yards. I probably would have to stay with a lighter bullet to match what the rimfire bullets were.


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BP Frequent Elocutionist Offline Posts: 8039 Location: Westside Joined: Aug 27^th, 2006	Re: 25 rf to 25/20ss centerfire Reply #3 - Apr 13^th, 2015 at 12:17am	Print Post
	Then I'd check to see if your bore isn't smaller than the pilot on your reamer.

	There are three kinds of men: The ones that learn by reading, the few who learn by observation, and the rest who have to pee on the electric fence and find out for themselves. Proud Noodlehead
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marlinguy Frequent Elocutionist Offline Ballards may be weaker, but they sure are neater! Posts: 16146 Location: Oregon Joined: Feb 2^nd, 2009	Re: 25 rf to 25/20ss centerfire Reply #4 - Apr 13^th, 2015 at 11:31am	Print Post
	I don't think it will work. The .25 Stevens used a .251" bullet, and the .25-20 WCF uses a .257" bullet (or close). Your bore will most likely be too small to use the .25-20 cartridge, unless you reline it, or find someone really good at reboring it.

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norb68 Participating Member Offline Posts: 29 Location: Beloit, WI Joined: Apr 27^th, 2011	Re: 25 rf to 25/20ss centerfire Reply #5 - Apr 13^th, 2015 at 12:18pm	Print Post
	That is what I was wondering about, the difference between the bores. I don't have a reference for the .25 rf but I thought the 25/20 ss was .257. I don't have a .25 rf but I thought if this was a possibility that I would get one, they are easier to find than a 25/20 ss barrels


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Bent_Ramrod Frequent Elocutionist Offline Posts: 1459 Location: Southern Arizona Joined: Feb 8^th, 2006	Re: 25 rf to 25/20ss centerfire Reply #6 - Apr 13^th, 2015 at 2:07pm	Print Post
	Somebody did that in the 1930's, and wrote it up in The American Rifleman as "A Slow-Twist .25-20." My references aren't to hand at present, but I don't recall that he had any particular trouble either in the rechambering or the shooting of the modified rifle.


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frnkeore Frequent Elocutionist Online Posts: 7281 Location: Central Point, OR 97502 Joined: Jun 16^th, 2010	Re: 25 rf to 25/20ss centerfire Reply #7 - Apr 13^th, 2015 at 2:27pm	Print Post
	For the record, the Lyman/Ideal 257420 WILL stabilize in a 17 twist Stevens barrel IF, the grooves are deep enough. I shoot that bullet in a modern .257 groove barrel (not a Stevens) with a 18 twist, no tipping at 200 yards. The thing that can make all the defference in the world is the groove depth. In 25 cal, Stevens didn't have the best QC. I had a original 25/20ss with a very nice bore, no pitting, it measured .250 bore x .254 groove (yes, .002 deep rifling) but, I could not get it to shoot well. I've read here, that there are .257 groove, 25rf's out there so, you need to have the rifle, in hand and measure the bore/groove, before doing anything like that. But, if it had a .257 groove, i'd try it. Frank

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art_ruggiero Frequent Elocutionist Offline Posts: 1090 Location: CT Joined: Dec 14^th, 2008	Re: 25 rf to 25/20ss centerfire Reply #8 - Apr 13^th, 2015 at 6:41pm	Print Post
	what about the conversion to center fire? just buy the correct rifle and save money art


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frnkeore Frequent Elocutionist Online Posts: 7281 Location: Central Point, OR 97502 Joined: Jun 16^th, 2010	Re: 25 rf to 25/20ss centerfire Reply #9 - Apr 13^th, 2015 at 8:58pm	Print Post
	art_ruggiero wrote on Apr 13^th, 2015 at 6:41pm: what about the conversion to center fire? just buy the correct rifle and save money art Can't go wrong there But, on the other had, you can't go wrong re-barreling a CF action, even a Stevens 25/20 barrel. Frank

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slumlord44 Frequent Elocutionist Offline Posts: 2850 Location: Lebanon, Illinois 62254 Joined: Dec 21^st, 2007	Re: 25 rf to 25/20ss centerfire Reply #10 - Apr 13^th, 2015 at 10:03pm	Print Post
	My Stevens 44 in .25 Stevens slugs closer to .256-257. Shoots .257 lead bullets fairly well with .27 Nail Gun loads for power at short ranges. I would recommend slugging the barrel.


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