Racepres Posted January 26, 2021 Report Share Posted January 26, 2021 First for me... an old, decrepit, Spanish '93 I am D&T for scope mounts. Front ring was typical, got it done. Rear Bridge??? Hardest I have encountered... not that I have done that many... but.. I thought Spanish Mausers were suspected to be "Soft"???? Not this one. I was able to get a "mark" like a Prick punch spot, for the drill to start in... using a Carbide "Burr" for my die Grinder.. HSS? no Chance... Cobalt? Left a very small mark!!! Order Carbide??? I do Not wish to break the torch out and anneal the spot. But, it occurs to me that if I don't, I will Never be able to Tap it!!! Just Venting... I thought 2021 would be "Easier" Quote Link to comment Share on other sites More sharing options...
Dr.Hess Posted January 26, 2021 Report Share Posted January 26, 2021 The hardening is usually not very deep. If you can grind the spot first, you will probably be through the hard part and can then drill it. Quote Link to comment Share on other sites More sharing options...
manureman Posted January 26, 2021 Report Share Posted January 26, 2021 I’ve found several that were so hard on the rear bridge that regular carbide/cobalt bits would not touch them even after grinding way deeper than normal surface hardening goes. I ordered a special bit Brownells advertised just for this problem, it looks more like a square sided easy-out than a drill bit. Been 15 or more years ago and it was $20.00-$30.00 then , don’t know if they still offer it or not , and I was convinced it was not going to work especially after seeing it didn’t even look like a traditional bit but it worked. Good luck Quote Link to comment Share on other sites More sharing options...
manureman Posted January 26, 2021 Report Share Posted January 26, 2021 After looking at Brownells site my memory may be wrong don’t know but they’re add for a solid carbide bit sounds real familiar about 03 receivers and harder....just doesn’t look like what I thought I remember it looking like Quote Link to comment Share on other sites More sharing options...
Racepres Posted January 26, 2021 Author Report Share Posted January 26, 2021 Thanks to both of ya's I did grind a "flat" spot to start as I couldn't Center punch it.. then broke out the Carbide "burr". actually what I consider fairly deep!!! as said... don't know how I will Tap the Darn thing!!! Prolly may as well attack it with Torch to Anneal!!! New territory!!! Quote Link to comment Share on other sites More sharing options...
manureman Posted January 27, 2021 Report Share Posted January 27, 2021 I was able to tap mine but I used carbon taps it took 3 or 4 per hole to get it done and I broke more than one but the carbon taps were easy to shatter and clean out . Sounds scarier than it was it really wasn’t near as big a deal as I thought and for me personally I was just more comfortable doing it without heat, I usually make an ass out of stuff in a big way with heat. Quote Link to comment Share on other sites More sharing options...
Racepres Posted January 27, 2021 Author Report Share Posted January 27, 2021 1 hour ago, manureman said: I usually make an ass out of stuff in a big way with heat. I resemble that remark... yet, I do Not like broken taps and such like.. Thinking I will rummage thru the old carbide Die grinder "stuff" looking for a Very small tip!!! before the Hot Wrench comes out!! Thinking with my smallest tip, and smallest "flame" maybe I can just hold a very small "spot" Hell... This is Not like an irreplaceable heirloom... This was a very...Extremely, sad Spanish '93, and it is destined to become an Ugly 300 Savage!!! Failure Means I cast an eye upon another in the "rack" .. tho, I do Not wish to tear it apart... for odd reasons.. prolly because, like some others Not in Line, it is close enough to original and Serviceable... Actually, right now, a 38 Turk is closer to the "knife" Quote Link to comment Share on other sites More sharing options...
Racepres Posted January 31, 2021 Author Report Share Posted January 31, 2021 Smallest welding tip on the farm, made a very small spot "red", walk away for awhile... come back and drill and tap like Nuthin!!! Not as big a deal as I thought!!! Quote Link to comment Share on other sites More sharing options...
manureman Posted February 1, 2021 Report Share Posted February 1, 2021 Get her did ! Glad it worked out. 300 Savage and a small ring go together like cobbler and ice cream. Quote Link to comment Share on other sites More sharing options...
Racepres Posted February 1, 2021 Author Report Share Posted February 1, 2021 17 hours ago, manureman said: Get her did ! Glad it worked out. 300 Savage and a small ring go together like cobbler and ice cream. the pinpoint [sort of] annealing worked... But.. I really Dislike the 300 savage!! I'm tempted to get a reamer and lengthen the neck...just because I love cast boolits!!!!! If I come up with another donor small ring, or a large ring in sad state... ie borderline unsafe... it will be the next 35 Remington!! I can't think of a round producing lower pressures... Quote Link to comment Share on other sites More sharing options...
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