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Securing a center fire barrel liner. (Read 777 times)

jhm Frequent Elocutionist Online Posts: 1987 Location: georgia Joined: Sep 4^th, 2011	Securing a center fire barrel liner. Mar 10^th, 2026 at 10:10pm	Print Post
	I have done many 22 RF liners in past but never a center fire one. I am about to do my first. What Locktite compound do I need? JMH


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cellargun Full Member Offline Posts: 159 Joined: Feb 28^th, 2022	Re: Securing a center fire barrel liner. Reply #1 - Mar 10^th, 2026 at 11:21pm	Print Post
	Red


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jimmy Senior Forum Member Offline Now available in Oklahoma. Posts: 427 Location: Skiatook Joined: May 12^th, 2009	Re: Securing a center fire barrel liner. Reply #2 - Mar 11^th, 2026 at 8:24am	Print Post
	Seems 292 was the number.


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bobw Frequent Elocutionist Offline Posts: 2038 Location: NW, Iowa Joined: Mar 19^th, 2013	Re: Securing a center fire barrel liner. Reply #3 - Mar 11^th, 2026 at 11:19am	Print Post
	jhm wrote on Mar 10^th, 2026 at 10:10pm: I have done many 22 RF liners in past but never a center fire one. I am about to do my first. What Locktite compound do I need? JMH Curious to your thoughts on why would you use anything different than the 22 liners you have done. Bob

	Robert Warren
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j_c_johnson Full Member Offline C C Johnson's grandson Posts: 135 Location: northeast Indiana Joined: Sep 16^th, 2004	Re: Securing a center fire barrel liner. Reply #4 - Mar 11^th, 2026 at 11:49am	Print Post
	I use Permatex sleeve retainer that will withstand 400 degrees You can hot blue a refined barrel an the liner won't come loose.


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jhm Frequent Elocutionist Online Posts: 1987 Location: georgia Joined: Sep 4^th, 2011	Re: Securing a center fire barrel liner. Reply #5 - Mar 11^th, 2026 at 3:03pm	Print Post
	The LR liners are "low pressure" so to speak verses a CF having higher pressure. Am I correct in this thinking? I have used RED on my 22 liners but wasn't sure it would secure a CF liner. JMH


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marlinguy Frequent Elocutionist Offline Ballards may be weaker, but they sure are neater! Posts: 17823 Location: Oregon Joined: Feb 2^nd, 2009	Re: Securing a center fire barrel liner. Reply #6 - Mar 11^th, 2026 at 3:08pm	Print Post
	If you're shooting at the usual pressure ranges of around 19,000 psi or so the pressure is higher, but still not what I'd call "high pressure". .22LR isn't much less, and SAAMI rates the .22LR up to 24,000 psi. Most people wont even consider relining a true high pressure barrel/cartridge. Bolt thrust is obviously higher at equal chamber pressures, but still not a big safety concern for the typical old hyphenated cartridges.

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Sure shot Frequent Elocutionist Offline Posts: 1134 Location: East central Iowa Joined: Jun 22^nd, 2020	Re: Securing a center fire barrel liner. Reply #7 - Mar 11^th, 2026 at 5:05pm	Print Post
	I tried to remove a liner that I used red loctite to secure it. Even placing the barrel in an oven at 500 degrees didn't work. I think that it would be nearly impossible to remove without drilling the liner out of the barrel. I would use the red loctite without any worries.


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jhm Frequent Elocutionist Online Posts: 1987 Location: georgia Joined: Sep 4^th, 2011	Re: Securing a center fire barrel liner. Reply #8 - Mar 11^th, 2026 at 6:11pm	Print Post
	I turned the liner from a lightly used 40 cal Badger I picked up a few years ago for cheap. I have some 292 on hand so I will use that and not worry about it. Just trying to err on the side of caution. Sure wouldn't want to have to retrieve a shot out liner from the range... JMH


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curdog Full Member Offline Posts: 111 Joined: Feb 26^th, 2022	Re: Securing a center fire barrel liner. Reply #9 - Mar 11^th, 2026 at 8:01pm	Print Post
	I use Loctite slow cure cylindrical retaining compound. Good to 450 degrees. It takes 24 hours to cure, and is green in color. I think it is 635, but I'll have to check.


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KFW Oldtimer Offline Posts: 621 Location: Wyoming Joined: Dec 18^th, 2016	Re: Securing a center fire barrel liner. Reply #10 - Mar 12^th, 2026 at 5:44am	Print Post
	Loctite 609 green has always worked for me, and up to 45-70 liners.


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curdog Full Member Offline Posts: 111 Joined: Feb 26^th, 2022	Re: Securing a center fire barrel liner. Reply #11 - Mar 12^th, 2026 at 9:01pm	Print Post
	I see you mentioned turning your liner down from an existing barrel. I have done this also, and leave the chamber end slightly larger. Then the old barrel chamber end is counter bored to match. The liner is then held in place mechanically by the breech block, and all the Loctite has to do is keep the liner in place for cleaning.


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jhm Frequent Elocutionist Online Posts: 1987 Location: georgia Joined: Sep 4^th, 2011	Re: Securing a center fire barrel liner. Reply #12 - Mar 12^th, 2026 at 10:13pm	Print Post
	I did just that. I left the chamber area a little larger which created an internal "step" if you will that essentially locks the liner in place where it can't go forward or backward and the Locktite will further secure the liner. I left that area about .0001 larger so when I install it I will have a press fit. I think everything will work out. The whole project wasn't really that hard just had to make some tooling to do it with. JMH


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kootne Senior Forum Member Offline Posts: 471 Location: Libby, Mt. Joined: Mar 6^th, 2012	Re: Securing a center fire barrel liner. Reply #13 - Mar 12^th, 2026 at 10:47pm	Print Post
	jhm wrote on Mar 12^th, 2026 at 10:13pm: I did just that. I left the chamber area a little larger which created an internal "step" if you will that essentially locks the liner in place where it can't go forward or backward and the Locktite will further secure the liner. I left that area about .0001 larger so when I install it I will have a press fit. I think everything will work out. The whole project wasn't really that hard just had to make some tooling to do it with. JMH I would not have that interference on the step. You will have to use some force to assemble. I have used many Loctite products for sleeve retention applications and as soon as you have a interference and start pressing or tapping it very likely will start setting up the Loctite. if it does, you will have a problem, the harder you push the tighter things get. Make it a slip fit when dry and use the shoulder on your step to stop against and you will be good.

	You can't make good decisions without good information.
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wesg Senior Forum Member Offline Posts: 331 Joined: Sep 13^th, 2004	Re: Securing a center fire barrel liner. Reply #14 - Mar 15^th, 2026 at 7:02pm	Print Post
	Depending on the size of the step, you can also wind up with 'hydraulic lock'. No amount of force you apply will seat it. If you want that sort of fit, a couple notches along the boss will let the air and Loctite out.


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jhm Frequent Elocutionist Online Posts: 1987 Location: georgia Joined: Sep 4^th, 2011	Re: Securing a center fire barrel liner. Reply #15 - Mar 16^th, 2026 at 12:20am	Print Post
	All good tips and thank you for providing them. My assembly went well and the liner is now secured. Turns out I had a little more clearance in the chamber are than I thought so the liner went in with little effort. This was my first center fire liner and I have learned much. I will be ready if I do any more of them. JMH


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