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An unhardened die will scratch cases.

From Cimcool: http://www.cimcool.com/wp-content/uploads/tech-reports/newchlor.pdf Chlorine Use In Metalworking Fluids Where chlorine comes from, what form it can take and its implications, especially in the aerospace industry: Chlorine is an element belonging to the same group as fluorine...

Form 5320.20 applies only to destructive devices, machineguns, short-barreled rifles, or short-barreled shotguns. https://www.atf.gov/files/forms/download/atf-f-5320-20.pdf There is no form available for transporting suppressors. As far as I know there are not any restrictions to transporting...

Yes. Years ago Stiller did the calcs as to what the optimal taper would be in his action and put it into his action. Some complained with the difference in fitting barrels so he stopped using that feature.

If I recall correctly the late Shelly Davidson did a fair amount of testing with sleeves shrunk on the muzzle of a centerfire barrel. I don't recall any positive success and there was a negative when he went too far. It's been so long ago I don't think his information is searchable/available...

It's a fiber reinforced piece of rubber. It probably doesn't need to be fiber reinforced. Fairly stiff durometer. It's glued on. Without looking I'd say it's about 1/8" thick. I'll agree with Butch in that they are a nice gunsmith lathe. Another problem area you may have to deal with (if...

If the gears you ordered don't work out Joe at Plaza Machinery has a gear repair kit with two rings you repair your existing gears with. $125 for the set. Pretty close to what you described you were looking for. Email Joe and be patient if you don't hear back right away. If you don't hear back...

255R is gone. Nearest replacement is ULTRACUT Pro.

1,1,1 trichloroethane. A chlorinated solvent. Banned because it depleted ozone. You can still find some of the old cutting oils now and then with 1,1,1 trichloroethane on ebay.

Both are extreme pressure lubricant additives (EP). Both have good properties for being in a cutting oil. Sulfur is considered a health hazard and an air pollutant. Chlorine is suspected to cause micro-cracking in parts during machining leading to stress fractures and part failure. Chlorine can...

That link is for the XMP trigger recall (the excess glue issue), the latest recall is for the old style Walker trigger.

170º=.0295"

I believe he moved on with Charles E and the rest of them.

stool, understand or not this is the answer to your question

Send it in and have it shortened. Get a print and mark the changes you want right on the print. Easy, been there and no problem. If you want PTG to do the work, call and they'll issue an RMA with a notation that the reamer is coming in for neck and throat rework.

If referring to OCW you should state that as your opinion. Some people do quite well with it. I have found it a useful tool. http://optimalchargeweight.embarqspace.com/#/ocw-instructions/4529817134 http://optimalchargeweight.embarqspace.com/#/ocw-vs-ladder/4529811360

When I was sent this print and saw the long dimension Jackie's BR and method came to mind. I'm also glad I caught the dimension before I ordered a reamer. The print said nothing other than "30 BR Robinett finisher". BTW I have your original PS article filed in my drawer for reference. Thanks!

Beware! There's one out there labeled Robinette that's 1.560".

I see. Your example is an early generation. They must have increased the spindle bore on the next generation. You can tell your example is an early generation by the triangular shaped plastic speed change knobs. The later generation uses a cylindrical all steel knob with a steel lever. The...

Where did you get the print? It would appear the spec of 1 21/32" would still be incorrect. 1 21/32" = 1.656" but the spindle is 1.81" (the Nardini manual actually says 1.13/16"-46mm). I am not quoting a spec from somewhere off the internet, I have an original Nardini manual sitting on my desk...