I know the barrel parts we made are made with metal certified to handle almost four times the pressures of any cartridge that has a .473 or .532"" rim diameter.Originally Posted by Blue Avenger
The thinner barrel tenon and/or barrel extension needed to fit the .555 case diameter of the Wsm would need to be really tough to handle the high pressure and I think that's why we haven't seen a rifle chambered in Wsm yet.
Maybe their planning on making a larger action for the WSM type of cartridges.
Made out of something stronger than the 110 action? The barrel doesn't hold the cartridge pressure like it does on the 110 with the large shank?
BTW. Nice work on the components. Are you going to Post or PM drawings? :)
The Dunning-Kruger effect is alive and well.
The 110 receiver is made out of steel, the Impulse receiver is made out of thin Aluminum that's surrounding the steel barrel extension and barrel.
I wouldn't want to thin those parts to accommodate the large diameter WSM case.
Drawings won't help anyone that doesn't have the machinery and very costly carbide tooling needed to machine heat treated metal.
Not to mention the custom line up jigs needed to make the extension + lug and the expertise to get those jigs to mesh with the machines to create parts with less then 5 thousandths tolerances.
This wasn't plug and play and if I would've known the costly issues we were going to have to overcome before we started, I would've just bought a couple of rifles to get the parts and called it a day.
The factory barrel extension was hand fit to the lug, as the anodizing was removed in some places and it was like that before I shot the hell out of it.
Our parts are made to much closer tolerances and don't need to be hand fit.
That cost me a pretty penny and a lot of sleepless nights to accomplish.
There may be people on here that have the tooling for anything below 45 Rockwell C. If you used 4140 or anything with a commercial HT it is probably less than 35 RC. Holding .001" may not be an issue either.....I was thinking large shank for the WSM. Sorry to hear you got stressed out. Single pointing the threads is probably the hardest part. I always make a gauge when threading bores. Go on one end and no go on the other. I have been known to do an undersized one also to tattle tale when I am getting close. Not as hard but 416 may be a better option for what it is.Regardless, I really enjoyed seen the finished products.
The Dunning-Kruger effect is alive and well.
We used cold rolled steel for all of the testing, then destroyed a lot of semi expensive tooling practicing on heat treated steel till we got the process and coolant application down.
Then we destroyed all of the cold rolled steel parts, as we didn't want any of them to be mistaken for heat treated parts.
Once we made a set that passed inspection and testing at the range, We bought the real expensive tooling and made better jigs to make the finished parts you see here.
All of the final dimensions are in the machinists computer.
[IMG][/IMG]
Did you PMI the OEM parts to ID the material and did you test OEM for hardness? The millwork on the recoil lug looks cnc. Did the machinist reserve the right to manufacture and sell parts? Again Really nice to see someone take this on.
The Dunning-Kruger effect is alive and well.
HAAS750SS mill and CNC lathe did all the work.
Didn't check anything on the factory parts but the dimensions and since they were sloppy, we tightened them up a bit.
We used certified hardened material, so I'm not worried about the strength, but I did put a few flak jackets over the rifle and used a string for the first couple of high pressure rounds I fired during range testing.
My friend owns a small but well equipped machine shop and I was there to help design, test and make the jigs needed, plus pay for all of the tooling + material.
All this occurred when we both had the spare time to work on the project and when the machines weren't being used between jobs, which was usually very late at night.
That's why it took a long time to complete and why I won't ask my friend for anything.
I'll talk to my friend about coming up with a price for the parts while we're coyote hunting this weekend.
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