Reattaching H&R Shotgun Forend Lug?


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Dave Markowitz
March 7, 2013, 11:07 AM
I have an H&R Topper 12 gauge single shot shotgun that I bought new in the early 80s. Long ago, the lug that the forend bolt screws to detached under recoil. This is not the lug that holds the barrel to the frame, just the lug used only to hold on the forend.

I would like to reattach the lug myself. Would silver solder be strong enough to hold it on or do I need to brass braze it? ASSuming silver solder is appropriate, can someone recommend one of these (http://www.brownells.com/search/index.htm?k=silver+solder&ksubmit=y) at Brownells? I would buy a MAPP torch to heat the solder.

(Please don't suggest sending the barrel back to H&R. The shotgun is too old for them to service, and I'd like to try fixing it myself anyway.)

Thanks.

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rcmodel
March 7, 2013, 11:23 AM
SILVALOY 355 SILVER SOLDER is what you need.
You will also need the proper flux.

http://www.brownells.com/gunsmith-tools-supplies/general-gunsmith-tools/solders-flux/hi-temp-hi-force-44-solder-prod711.aspx

Whether you can get the barrel & lug hot enough fast enough with a MAP torch is another question?

I use an oxi-acetylene torch with it and have no experience with a MAP gas torch.

Hi-Force 44 hi-temp silver solder works at about half the temp, but isn't as strong.
http://www.brownells.com/gunsmith-tools-supplies/general-gunsmith-tools/solders-flux/hi-force-44-solder-prod709.aspx

rc

Dave Markowitz
March 7, 2013, 11:32 AM
Thanks.

FROGO207
March 8, 2013, 06:19 PM
If you can get your local friendly plumber to help or let you use their propane torch things will go LOTS better. Ask me how I know.:eek: Fast in and fast out is the best option. A mapp gas torch will need about 2 1/2 times the length of time to heat the localized area enough to flow the solder and will unduly heat more of the barrel. That you should avoid at all costs. In that vein Oxy-Acetlyn will work even better with the higher localized heat.

Dave Markowitz
March 10, 2013, 09:38 AM
Another option for me is welding. A friend has both a TIG and MIG welder. Would one be more suitable than the other?




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jaguarxk120
March 10, 2013, 10:03 AM
A TIG welder is just the thing for this job, BUT it all depends on the skill of the operator. Some welders can weld tinfoil together and others would have trouble just striking a arc. All that is needed is a couple of very small welds to hold the forearm lug in place, as I said the skill of the welder is the thing with TIG. Your working with very thin metal with the barrel.

AR15barrels
March 11, 2013, 01:27 PM
I tig welded a lug on an H&R 12ga barrel a couple weeks ago.
The customer had lost the original threaded piece and screw.
I just ordered a bag of weld nuts from McMaster and formed the flange to match up with the barrel diameter.
Then I stitched around the edge of the nut with a tig welder.

The forend hole was pretty chewed up so I made an aluminum pillar and bored a hole in the wood that the pillar would slip into.
The whole gun went back together as good as new.

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