Hello, everyone. Concerning custom jacketed bullets..you guys are going to have to back up a bit..long before Vernon Speer, or Dave Corbin.
Ralph B. Sisk was born in 1894. Always an experimentor, he sought a better bullet for varminting..in 1928, he made up a set of dies for converting fired .22 L.R. cases into jacketed bullets.
The small business he started fed his small family thru the depression years.
The only calibers he made were .223, .224, & .228.
P.O. Ackley asked him to make some .17 bullets for his new barrels shortly after WW2.
Mr. Sisk never automated his equipment..all his bullets were made by pulling a handle on an arbor press..he was able to turn out 15,000 bullets in a single day! (Must have had some arms!)
Mr. Sisk passed away in 1970.