The Home Machinist!

If you could provide a close up image of the piece in question, we could give a better answer. But normally, one holds round stock in the vise with one V-block from the side, the vise compressing the stock between the fixed jaw and the V-block. Non-round portions of the stock can complicate holding ...

Both Fajen and Bishop were bought by Midway. It looks like Macon has them now.

Richards Micro Fit is another semi-inletted stock maker.

Many years ago (probably '60's), there was a fairly active casting contingent casting zinc bullets. The finished product had a number of detrimental characteristics (lower weight bullets, brittle bullets that did not expand, zinc contamination of melting/moulding equipment requiring separate equipme...

Parallel circuits are almost impossible to eliminate and since solid state gear has such low reverse voltages in most cases, they should be completely removed. Otherwise, oxy/acetylene.

The problem with high sulfur and leaded steels is that the sulfur/lead will vaporize at welding temperatures and create porosity at best. The material will likely by connected and the joint may serve for cosmetic applications but it is not a high strength weld.

If you are going to use the lathe as a planer to cut the flats, I would try to do something to back up the barrel to reduce deflection while cutting. Maybe a strong back clamped to the back side since you don't have a good place to mount the clamps.

I think you should stay with a hard lap to control where the lapping occurs. A soft one will end up lapping everywhere.

Maybe a piloted spiral reamer so it won't catch in the grooves?

You might consider adding the word SPECIAL following or underneath the 6MM REMINGTON marking to at least get the attention of subsequent owners that the chambering is not the factory 6MM Rem.

When you are composing a lengthy post, it is best to do the composition in WordPad or Notepad or some other offline editor and then copy and paste the text into the forum software all at once. That way you have a backup copy and are not subject to timeout issues on the internet.

Your first problem will be a method to hold the blanks. A semi-inletted stock would be even harder to hold.

Maybe a forging?