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Hot Topic (More than 10 Replies) Swedish RB Breech Block Question. (Read 676 times)
fjrdoc
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Swedish RB Breech Block Question.
Sep 3rd, 2025 at 5:41pm
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Hi Members. I've been spending some time working on my Swedish RB that I purchased from Simpson Ltd. the other year. Pewter nosecap has been poured and new wood from Treebone carving is fitted.
Currently, I'm working on the receiver and trigger guard to get them ready for CCH. 
My rifle has the large paddle on the breech block. It's not a look that I like but I can see that it would be very functional in a battle situation. 
I like the looks of the original Remington upward positioned breech block lever. Could I change out the breech block or would it be more bother than what it's worth? Can I rework the original lever to a different shape?
Just thought that I would reach out to the forum for some ideas
  
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ssdave
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Re: Swedish RB Breech Block Question.
Reply #1 - Sep 3rd, 2025 at 6:17pm
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As long as the extractor is the same, most of the breech blocks will interchange.  You'd just have to compare or try to see.  I don't think you could reshape a swede ear into anything attractive, geometry is just wrong, it doesn't allow for sweeping it back easily, although it's fat, it sticks straight up.   

I suppose you have the keeper screws on the hammer and block pins also?  I find those singularly unattractive also, and generally fill them and use a remington style button to hold in newly made pins.  Good opportunity to tighten up tolerances anyway.
  
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fjrdoc
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Re: Swedish RB Breech Block Question.
Reply #2 - Sep 3rd, 2025 at 6:59pm
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Hi Dave. Thanks for your response. My rifle has the Remington style button so I'm good that way.
I don't have access to other breech blocks to try for fitment. I suppose I could fab a different style ear and weld it on the block, but that seems like it wouldn't be worth the effort.
  
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John Taylor
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Re: Swedish RB Breech Block Question.
Reply #3 - Sep 4th, 2025 at 12:02pm
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Just finished working on a sweed. Breach block and hammer had over sized pin holes which made for a very sloppy set-up. I reamed the frame and made new pins that were .015" oversized. I was installing a new barrel and had to take .010" off the end of the barrel after the new pins.
  

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marlinguy
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Re: Swedish RB Breech Block Question.
Reply #4 - Sep 4th, 2025 at 1:35pm
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fjrdoc wrote on Sep 3rd, 2025 at 5:41pm:
Hi Members. I've been spending some time working on my Swedish RB that I purchased from Simpson Ltd. the other year. Pewter nosecap has been poured and new wood from Treebone carving is fitted.
Currently, I'm working on the receiver and trigger guard to get them ready for CCH. 
My rifle has the large paddle on the breech block. It's not a look that I like but I can see that it would be very functional in a battle situation. 
I like the looks of the original Remington upward positioned breech block lever. Could I change out the breech block or would it be more bother than what it's worth? Can I rework the original lever to a different shape?
Just thought that I would reach out to the forum for some ideas


I simply made a new lever that looks like the Sporting style and cut the old sideways large lever off. Then took my new lever to a local guy I use for tig welding and had him tig weld it on. Once he was done I filed and dressed it, then checkered the lever with my thread file to make it look better. 
I like the hammer and breech blocks blued as it makes a nice contrast to the beautiful case colors, and rust bluing them wont make the welds a different color either.

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I streamline the military lower trigger plates to Sporting width, and round the trigger guard also to Sporting shape. Or switch out the trigger plates to a pistol grip plate.
  

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fjrdoc
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Re: Swedish RB Breech Block Question.
Reply #5 - Sep 4th, 2025 at 6:36pm
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That looks great Marlinguy. I'm in the process of contouring the trigger guard similar to yours in the picture. Does welding on the breech block affect the hardness of the steel?
How many lines per inch works best for a good grip?
« Last Edit: Sep 4th, 2025 at 7:10pm by fjrdoc »  
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marlinguy
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Re: Swedish RB Breech Block Question.
Reply #6 - Sep 5th, 2025 at 10:28am
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fjrdoc wrote on Sep 4th, 2025 at 6:36pm:
That looks great Marlinguy. I'm in the process of contouring the trigger guard similar to yours in the picture. Does welding on the breech block affect the hardness of the steel?
How many lines per inch works best for a good grip?


I've have borken levers welded back on, and also made new ones and had them welded on, both with tig welds. Never had any issues with heat being an issue, but tig doesn't heat the metal like mig or gas welding does. 
I used the 16 tpi side of my thread file at 45 degrees to make a cross hatch pattern. Nice and sharp, and the hammers cut fairly easy. The hammer in the picture I posted started life as a big ugly military hammer too, but I copied the hammer on one of my Sporters to reshape it, and checkered it the same way also.
  

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fjrdoc
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Re: Swedish RB Breech Block Question.
Reply #7 - Sep 5th, 2025 at 1:05pm
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Thank you Marlinguy. I don't own a TIG welder, but I suspect that if I use heat blocking paste and MIG weld a little at a time I should be OK.
Looks like I'll be thinning down the hammer as well. I don't own an original sporting rifle so it makes it a little more difficult to modify these parts.
  
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marlinguy
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Re: Swedish RB Breech Block Question.
Reply #8 - Sep 5th, 2025 at 1:38pm
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fjrdoc wrote on Sep 5th, 2025 at 1:05pm:
Thank you Marlinguy. I don't own a TIG welder, but I suspect that if I use heat blocking paste and MIG weld a little at a time I should be OK.
Looks like I'll be thinning down the hammer as well. I don't own an original sporting rifle so it makes it a little more difficult to modify these parts.


I don't own a tig welder either, so I pay a guy to do it. I'd suggest doing the same to ensure less heat, and avoid porosity that wont be an issue with a tig weld. 
Lots of pictures of sporting hammers to view to rework the hammers, and plenty of metal to allow reshaping without doing anything but remove metal.
  

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fjrdoc
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Re: Swedish RB Breech Block Question.
Reply #9 - Sep 7th, 2025 at 7:04am
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Thanks Marlinguy. I'll try to track down someone to TIG weld the breech lever. 
After I finish the receiver and trigger guard, I'll get to work on the hammer. It's a good thing that I purchased some good files before I started this project.
  
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marlinguy
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Re: Swedish RB Breech Block Question.
Reply #10 - Sep 7th, 2025 at 11:37am
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fjrdoc wrote on Sep 7th, 2025 at 7:04am:
Thanks Marlinguy. I'll try to track down someone to TIG weld the breech lever. 
After I finish the receiver and trigger guard, I'll get to work on the hammer. It's a good thing that I purchased some good files before I started this project.


I think you'll do great once you have the spur lever welded and shaped. You'll be surprised how easily the spur and hammer spur both file once you start working on them. If it helps I can post a closeup picture of a Sporting block and hammer spur to get an idea of how they look?
  

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fjrdoc
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Re: Swedish RB Breech Block Question.
Reply #11 - Sep 7th, 2025 at 2:10pm
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Thanks, Marlinguy. No need to do that. I've looking at pics of RB's on Leroy Mertz's website to get a decent idea of proper profiles. Thanks for the offer.
  
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fjrdoc
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Re: Swedish RB Breech Block Question.
Reply #12 - Sep 8th, 2025 at 12:49pm
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I think that I've located someone to TIG weld my breech lever.  I'm going to sent my receiver, trigger guard and shotgun butt plate away to have them CCH.
The shop that will be doing the CCH will also do the breech and hammer in order to prevent receiver distortion.
I think that I would like to either blue the breech and hammer or possibly polish these pieces. Is that possible to do after they have been CCH?
  
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marlinguy
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Re: Swedish RB Breech Block Question.
Reply #13 - Sep 8th, 2025 at 4:28pm
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fjrdoc wrote on Sep 8th, 2025 at 12:49pm:
I think that I've located someone to TIG weld my breech lever.  I'm going to sent my receiver, trigger guard and shotgun butt plate away to have them CCH.
The shop that will be doing the CCH will also do the breech and hammer in order to prevent receiver distortion.
I think that I would like to either blue the breech and hammer or possibly polish these pieces. Is that possible to do after they have been CCH?


I'm confused? Not sure how CCH the breech block and hammer stops distortion of the receiver? I've had Al Springer CCH numerous Rolling Block actions and never sent him the hammer and breech block, and he's never distorted an action, or asked for the hammer and block to avoid it.
Once those two parts are color cased they'll need to be annealed again before bluing as the hardened surface wont take bluing well. I think you should contact Al Springer in Moore, Mt. about doing your CCH work. He's one of the best, and the only person I've used for decades. Whoever you're planning to have do it doesn't know how to avoid warping.

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Re: Swedish RB Breech Block Question.
Reply #14 - Sep 10th, 2025 at 9:50pm
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Along the same line we have made a couple of left hand rolling block rifle by "moving" the breech block thumb piece from the right side to the left side of the block.  The TIG, in the right hands, makes for a very clean remodel.
  
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