Any tips for loading hollow base bullets?

Pistolero

Well-Known Member
Elmer designed the 358431 as the hollow based version of the 358429, and the 358439 as the HP version. Later they called it the 3585429 HP, but I have one marked 359439.

There was a HB version of the 429421, too, I believe it was 429422. My bet is finding the mold would
be a difficult search.

Which one is that 358156?

Bill
 

358156 hp

At large, whereabouts unknown.
Pete nailed it. It's a really early 429422. You really need to watch your temperature control with those early "captive pin" type moulds. They used to be pretty easy to find, but nobody seems to be turning loose of them lately. I blame "American Pickers".