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AL,
I'd use a spider instead of the 4 jaw. Easier to adjust with the screws vs the chuck jaws.

Al,
I've seen a custom built steady using a high grade bearing instead of fingers with a spider built in. I seem to recall it was used for shotgun choke work. Made sense to me at the time. Would be...

I know Jef Fowler had over a million on his carbide 6MM dies. They were getting a bit fat and fish mouthed.

You can make a lot of bullets with steel dies. I started with a 6MM set Ferris made. To wear out carbide dies takes numbers around a million or more. Steel maybe a 100,000 but that's just a guess on...

A simple search on this site.

https://www.accurateshooter.com/competition/new-scoring-reticle-approved-by-ibs/

No it wasn't. I sent all my measuring equipment off and there was a card in the box with the reticle. He made a run a few years ago because of new clubs needing them.

I don't have his contact information but a gentleman was making a scoring plate, all calibers, for the IBS. All you need is a 4X domed magnifier to go with it.

The majority of the time you get some taper from work piece deflection.

It's called free machining for a reason.

I know a little bit about what's being used. Most, if not all, are not capable of shooting the difference. Tier 1 groups have basically custom built rifles. They have smiths who take care of their...

Back when I was a garage smith with no heat I got hung up in my spider which was doing 1250 RPM's at the time. I tore the sleeve out of a long john top and a sweater getting away from that thing....

50's are Sooooo much fun

Every once in awhile you get one that sends you to the psychologist. But but but it can't be me!
I have several I have notes attached to reminding me about personality flaws they have.

Wrap it in wax paper. Slow speed. May have to do it several times to get it to settle down. Just in case I keep precut paper by my machine.

25275

Rotary union is on a microphone stand. The manifold in the rear of the pic controls air as well as oil.

Many times I've forgotten to disconnect mine and run it through a couple of operations at 2,000 RPM's.

I have my rotary union mounted on a microphone stand with a 12" length of hydraulic hose.

I've never heard of Alpha Legacy. Carbide I get from JGS I run at 250-300 RPM's with flush oil. I have had reamers supplied by OEM's and they were ground for high HP machines and rigid fixturing....

I have to ask why do you need a small base die?

Funny When they said a bolt face was too hard to bush. Enter the carbide endmill. Ezzzypezzzy

At one time I had Don's 22's,6's and 30's. I think all of them were a 7 ogive.

Bolt thrust. Never worried about it. It's there. Pressure in somewhat of a cylinder, regardless of shape, exerts equal force on all surfaces. Now we can discuss surface finish and lubrication on the...

Send Dave a print and tell him the changes you want. He'll make for you. I would go with a larger diameter neck.

Honing straightens and makes a truer round hole in addition to controlling the size and finish. It's how some cut rifled barrel makers hold the tolerances they do on the bore.

Dialed in is dialed in. Obviously 4 groove is quicker. I've done thousands of 5 groove and it doesn't take me any longer to dial them in than a 4 groove. 3 groove Lilja's can/will drive a man to...