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Walker Hepburn (Read 3109 times)

marlinguy Frequent Elocutionist Offline Ballards may be weaker, but they sure are neater! Posts: 16266 Location: Oregon Joined: Feb 2^nd, 2009	Re: Walker Hepburn Reply #15 - Oct 1^st, 2024 at 7:43pm	Print Post
	buchsenmacher wrote on Oct 1^st, 2024 at 4:00pm: I have also done a Hepburn in .22 rimfire. For that one I made a new breech block with the firing pin in the correct location. I also made the top of the block a little higher and put a loading trough in it that lines up with the chamber when the block is in it's "rest" position. To get the fired shells out of the action after the extractor has done it's work, I use a 6mm ignition wrench. Just one question about something you mentioned during your video. You said the bore is running at an angle which didn't sound correct? The bore is still centered on the barrel throughout, with just the shank turned offset isn't it?

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jhm Frequent Elocutionist Offline Posts: 1554 Location: georgia Joined: Sep 4^th, 2011	Re: Walker Hepburn Reply #16 - Oct 1^st, 2024 at 8:19pm	Print Post
	So much information generated from a simple question asked... JMH


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buchsenmacher Full Member Offline Posts: 205 Location: Adrian, MI Joined: Apr 18^th, 2004	Re: Walker Hepburn Reply #17 - Oct 1^st, 2024 at 8:43pm	Print Post
	The exterior of the barrel is concentric with the threads at the breech and concentric with the bore at the muzzle. The bore does run at an angle through the barrel. The angle is .125" over 30" That works out to an angle of 15 minutes. I haven't had to do anything special with the scope mounts. I was able to sight in the .22 barrel at 200yds with no problem.

	Steven Durren Professional member, ACGG
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buchsenmacher Full Member Offline Posts: 205 Location: Adrian, MI Joined: Apr 18^th, 2004	Re: Walker Hepburn Reply #18 - Oct 1^st, 2024 at 8:53pm	Print Post
	Here's a picture of the breech end of the barrel showing the extractor setup. This was one of my test pieces, so it's a little rough.

	Steven Durren Professional member, ACGG
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bobw Frequent Elocutionist Offline Posts: 1531 Location: NW, Iowa Joined: Mar 19^th, 2013	Re: Walker Hepburn Reply #19 - Oct 1^st, 2024 at 9:49pm	Print Post
	So Steve, when you crown the barrel, you are still gauging off the bore centerline? Bob

	Robert Warren
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LRF Oldtimer Offline Posts: 610 Location: MN Joined: May 8^th, 2010	Re: Walker Hepburn Reply #20 - Oct 2^nd, 2024 at 6:20am	Print Post
	buchsenmacher wrote on Oct 1^st, 2024 at 3:55pm: Here's a link to a YouTube video put out by the American Custom Gunmaker Foundation. (You need to *Login* or *Register* to view media files and links) In the video I'm doing an offset chamber for a two barrel set on a Winchester takedown. The video also covers relieving the threads for the takedown. Excellent video. Thanks for sharing. Learned a couple of tricks (I hadn't previously thought of like using the mill to turn the offset shank) for this old dog.


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buchsenmacher Full Member Offline Posts: 205 Location: Adrian, MI Joined: Apr 18^th, 2004	Re: Walker Hepburn Reply #21 - Oct 2^nd, 2024 at 8:14am	Print Post
	bobw, Yes, I indicate off of a gauge pin inserted in the bore when I cut the crown. The I.D. and O.D. are concentric at the muzzle so it looks like a normal barrel at that point.

	Steven Durren Professional member, ACGG
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calledflyer Frequent Elocutionist Offline Posts: 3584 Joined: Mar 9^th, 2015	Re: Walker Hepburn Reply #22 - Oct 2^nd, 2024 at 9:34am	Print Post
	It's not just saving the breech block Pat, it's also being able to build a switch barrel rifle and use the same firing pin and block. Plus just turning the barrel offset only requires a 2nd extractor to fit the .22RF and one for whatever CF cartridges. I personally think whoever thought it up was pure genius. [/quote] I wasn't intending to say it was a poor idea, Vall, but whether the idea was worth it financially or in field service. If the extractor needs to be swapped out, why not just use a centered barrel, because the block is removed anyhow. Save the work of off-center boring. Hope that makes sense-- Like I said, just a non-machinist guy wondering how'n heck that idea got started.


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John Taylor Frequent Elocutionist Offline Posts: 1709 Location: Lewiston, ID Joined: Oct 23^rd, 2006	Re: Walker Hepburn Reply #23 - Oct 2^nd, 2024 at 10:24am	Print Post
	marlinguy wrote on Sep 30^th, 2024 at 8:10pm: There's a simpler way to convert and not alter the action. Plus you can always switch back to a CF easily! Oldtime gunsmiths simply turned and threaded the barrel shank offset 1/8" so the CF firing pin struck the edge of the .22 shell. I have two Ballard rifles done this way and they work great! I did the same thing on a #1 Ruger several years back. Making the extractor work was the hard part.

	John Taylor Machinist/gunsmith
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rifleman Full Member Offline Posts: 191 Joined: Aug 4^th, 2015	Re: Walker Hepburn Reply #24 - Oct 2^nd, 2024 at 12:38pm	Print Post
	I owned a converted Hepburn, originally a 45/70. Builder filled in the bottom of slot on the left side of breachblock so the screw that limits travel would stop the breachblock coming up at the exact point at which the firing pin would hit the lower rim of the 22LR. Slick and reversable


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rifleman Full Member Offline Posts: 191 Joined: Aug 4^th, 2015	Re: Walker Hepburn Reply #25 - Oct 2^nd, 2024 at 12:43pm	Print Post
	Oh and I love a Hepburn but I wouldnt want a 22Lr unless it was for bench work


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GT Frequent Elocutionist Offline Posts: 2047 Location: Northeast Wyoming Joined: Jun 28^th, 2015	Re: Walker Hepburn Reply #26 - Oct 2^nd, 2024 at 2:13pm	Print Post
	I copied the breech block on one of Tony's Walker's. Here it is with the block down, has a loading ramp, followed by a picture of it at battery. Transfer bar so the firing pin is straight on - striking at 6 o'clock. Loading and removing still has it's challenges but it's better than the original design.

	"To invent, you need a good imagination and a pile of junk" T. A. Edison "The trouble ain't that there is too many fools, but that the lightning ain't distributed right" M.T.
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ssrifles Senior Forum Member Offline Posts: 281 Joined: Mar 23^rd, 2009	Re: Walker Hepburn Reply #27 - Oct 2^nd, 2024 at 6:18pm	Print Post
	if you want to see how to fix a hepburn to shoot 22's easy go to page 216-217 in the hepburn book. this is my gun, only known one with factory sidewall cut down and has the walker breechblock.which means the top of the block is even with the chamber and is channeled for the 22 round to easily be pushed in. it shoots as good as it looks. tony<><


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jhm Frequent Elocutionist Offline Posts: 1554 Location: georgia Joined: Sep 4^th, 2011	Re: Walker Hepburn Reply #28 - Oct 2^nd, 2024 at 7:59pm	Print Post
	Aw guys I don't need to be seeing this. I got enough going on. I got a Borchardt build in progress and a Ballard and Farquarson kit ordered from Rodney. I don't need to be ordering a Hepburn kit too... Have to say much needed information if your going down that road though. JMH


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marlinguy Frequent Elocutionist Offline Ballards may be weaker, but they sure are neater! Posts: 16266 Location: Oregon Joined: Feb 2^nd, 2009	Re: Walker Hepburn Reply #29 - Oct 3^rd, 2024 at 11:45am	Print Post
	calledflyer wrote on Oct 2^nd, 2024 at 9:34am: I wasn't intending to say it was a poor idea, Vall, but whether the idea was worth it financially or in field service. If the extractor needs to be swapped out, why not just use a centered barrel, because the block is removed anyhow. Save the work of off-center boring. Hope that makes sense-- Like I said, just a non-machinist guy wondering how'n heck that idea got started. If you made the barrel centered or off centered, you'd still need a different extractor Pat, so not saving anything that way. You'd need two breech blocks to keep both bores centered, or you'd have to modify the breech block and then you wont have a switch barrel setup.

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