ASSRA Forum - Low wall out of square

ASSRA Forum › General › Gunsmithing Single Shot Rifles › Low wall out of square

(Moderator Group: Moderator)

‹ Previous Topic | Next Topic ›

Page Index Toggle

Pages: 1 [2]

Hot Topic (More than 10 Replies)

Low wall out of square (Read 2729 times)

830singleshot Senior Forum Member Online Posts: 437 Location: Texas Joined: Feb 11^th, 2007	Re: Low wall out of square Reply #15 - Nov 20^th, 2022 at 11:05am	Print Post
	This is exactly how Steve Siebold from Sulphur LA demonstrated to me in the mid '90's. Next he would put a spring loaded plunger in a barrel stub and lap the breach block into the action mortise. Last, he would square up the breach block face to the barrel by making a close fitting barrel stub and screwing it into the action with a small amount of bedding compound in the breach block face. Once it was set, the breach block is set up in the mill, indicating off of the bedding compound, and a skim cut is made.

	J. Scott McCash&&New Braunfels, TX&&830-237-2376&&jsmccash@yahoo.com
	IP Logged

830singleshot Senior Forum Member Online Posts: 437 Location: Texas Joined: Feb 11^th, 2007	Re: Low wall out of square Reply #16 - Nov 20^th, 2022 at 11:11am	Print Post
	The preceding is assuming you have already taken the slop out of the action with new fitted screws and pins and a link to properly locate the firing pin. In addition you will need to repair any damage/ bush the firing pin. Steve always said the barrel work was the easy part, it was the action blueprint that took the most time.

	J. Scott McCash&&New Braunfels, TX&&830-237-2376&&jsmccash@yahoo.com
	IP Logged

Chuckster Frequent Elocutionist Offline Posts: 2260 Location: Colorado Joined: May 15^th, 2008	Re: Low wall out of square Reply #17 - Nov 20^th, 2022 at 2:00pm	Print Post
	Like the idea suggested by John Taylor and Grand Slam, Excellent. Breech block fitting tool: A little grease on the front face to put pressure on the breech block to lap the shoulders. Next, lapping compound on the front face to square the breech block face with the bore. Very little metal removed. Chuck


	IP Logged

jhm Frequent Elocutionist Offline Posts: 1756 Location: georgia Joined: Sep 4^th, 2011	Re: Low wall out of square Reply #18 - Nov 20^th, 2022 at 2:15pm	Print Post
	Have done Sharps 74 and 77 kits and rolling blocks that way also. Normally doesn't take very much to clean things up. JMH


	IP Logged

GT Frequent Elocutionist Offline Posts: 2143 Location: Northeast Wyoming Joined: Jun 28^th, 2015	Re: Low wall out of square Reply #19 - Nov 21^st, 2022 at 9:42am	Print Post
	Richard, Looks like it turned out very well. Good job! Thanks John for contributing to the post, use this method on bolt guns all the time never gave it a thought to try it on a HW. Greg

	"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.
	IP Logged

Grand slam Senior Forum Member Offline Posts: 352 Location: Mountains of E. Tennessee Joined: Jun 7^th, 2015	Re: Low wall out of square Reply #20 - Nov 21^st, 2022 at 10:16am	Print Post
	I creeped up on the thread fit so it was really a snug fit into the action so there was zero slop and it would not slip with light cut. The cutter was HSS and after grinding I honed it. Thanks guys it is really great getting ideas and bouncing ideas around. 830single shot, scott got you email this morning, thank you! Cheers Richard


	IP Logged

Grand slam Senior Forum Member Offline Posts: 352 Location: Mountains of E. Tennessee Joined: Jun 7^th, 2015	Re: Low wall out of square Reply #21 - Nov 21^st, 2022 at 11:04pm	Print Post
	My Winder has been “ridden hard and put away wet”, all the pins are worn to make a sloppy action for a match rifle. Tomorrow I’ll order some gage pins in .194” & .195” size and lap the holes to size for a good close fit. The gage pins are harder than a Klondike hooker’s heart and will need to be drawn back so the pin wears and not the part. Scott (830singleshot) gave me a good suggestion of using a small dab of epoxy on the breech block face and while it’s assembled screw in a stub that has a polished flat face. This will compress the epoxy to a thin cross section that will be perpendicular to the barrel centerline. When I remove the breech block I’ll set it up on the surface grinder (it’s case hardened) dial it in and a few light passes will get it straight to the world. GT, John, Scott, Chuckster and all thank you for the help and suggestions and when I can’t hit the side of a barn with it I’ll know who to blame lol. Cheers guys, Richard


	IP Logged

hepburnman Senior Forum Member Offline Posts: 402 Location: NJ Joined: Mar 22^nd, 2015	Re: Low wall out of square Reply #22 - Nov 22^nd, 2022 at 8:47am	Print Post
	Grand slam wrote on Nov 19^th, 2022 at 10:54pm: Made a threaded stub arbor and it worked fine. I only had to take of .007” Nice set up! A question though. Was it necessary to use the center pilot? Most tailstocks are not exactly on center. Could you still have faced the action by indicating on the barrel stub to be sure it was concentric and then doing the facing op without the pilot?


	IP Logged

Green_Frog Frequent Elocutionist Offline "It ain't easy being green" ASSRA Life #281 Posts: 4118 Location: Lynchburg, VA Joined: Apr 18^th, 2004	Re: Low wall out of square Reply #23 - Nov 22^nd, 2022 at 10:46am	Print Post
	Just a random thought here. I bought a horizontal bench top mill (Atlas) because of the cool work I got to do on the big Cincinnati horizontal in the shop class at my community college. I’m wondering whether it would be easier to line the receiver up and true the face in a horizontal mill(?) I need more coffee, I guess! Froggie


	IP Logged

wesg Senior Forum Member Offline Posts: 318 Joined: Sep 13^th, 2004	Re: Low wall out of square Reply #24 - Nov 22^nd, 2022 at 4:17pm	Print Post
	hepburnman wrote on Nov 22^nd, 2022 at 8:47am: Nice set up! A question though. Was it necessary to use the center pilot? Most tailstocks are not exactly on center. Could you still have faced the action by indicating on the barrel stub to be sure it was concentric and then doing the facing op without the pilot? Doesn't matter. If it's off, the face will be slightly conical but still 'square'. Most lathe tailstocks are off in height anyway. In the setup he used, the center is for stiffness. Done 'backwards' on a stub held in the chuck is a stiffer setup by nature, but has less working clearance and requires a left hand cutter. Norwegian Krag, LH square thread. The barrel seats on a shoulder inside like a Mauser, so the mandrel bears on that. Need the cutter upside down so the LH thread tightens during the cut. The main point was to avoid turning down the breech end of the barrel to fit inside the counterbore. May as well true the face while I'm there. And I fitted the barrel bearing on both.
	« Last Edit: Nov 22^nd, 2022 at 4:34pm by wesg »

	IP Logged

Page Index Toggle

Pages: 1 [2]

‹ Previous Topic | Next Topic ›

« Board Index ‹ Board Top

Top

ASSRA Forum » Powered by YaBB 2.6.12!
YaBB Forum Software © 2000-2025. All Rights Reserved.

Valid XHTML

Valid CSS

Powered by Perl

Source Forge

Page completed in 0.6811 seconds.