Home Forums Hunting & Shooting Gunsmithing Modified case for Hornady Overall length gauge

I saw that too. Could be my ChiCom tap is the problem!.......

My stuff is the early Stoney Point too. My second comparator body is Hornady though. I have calipers dedicated to the two comparator bodies and the "Head' N Shoulders" body.

I use digital calipers. Easier to zero and read for an old man. Can’t remember exactly where I bought the tap but it’s got USA stamped on it and at the time it wasn’t the cheapest. Drill bit I use is an L although 7.3 and 9/32 do work. I never really worried about thread depth due to drill size as when I thought about it, you aren’t really putting enough strain or pressure on it as you would a fastner.
As far as the case I also found that a once fired case that would rechamber in that rifle was the easiest. A bullet would already mostly slide in the neck.

HCI (local) had the tapered (plug) tap and bit I needed, though it was the "L" bit I got, not the 7.3mm mentioned. Seemed to work OK though.

If you use a Wilson trimmer, any good quality drill press vise with a v-notch will hold the case holder for the specific caliber you want to work on in a straight up perpendicular position to drill and tap as many cases as you like with one simple set-up to find center. Once the drill press vise is locked down, make as many of each caliber you want, then just change the holder. Pop the brass out with the blade of a screw driver or chisel. Then just change to holders to make more in another caliber.

Phil

I used a metal lathe 3jaw chuck and a drill chuck in the tailstock to start the taper tap. And finished with a ratchet tap handle. I didn't think a couple of thou would matter in this use. The 8" chuck slipped on a couple of cases, so they got tossed. I did about a dozen.I'm still learning on the metal lathe. I use to do two sticks and a knife.