Quote:Would that be stock, caliber, twist and bullet style too?
Good point, Bob.
Recreating the "Golden Age" (not Golden, CO) accuracy results, can be a very large can of worms.
To my knowlege, there are no certified "real" BP. I think even the GOEX (Dupont formula) was the Blasting Powder formula. All the fancy new BP's, I don't believe you could by back then and how accurately they might be formulated to the available BP's at that time.......... who knows.
Before this lastest BP cartridge kick, duplex loads were readily excepted at matches, at least on the West coast. Duplex was a well established loading method during the "Golden Years".
To make it even, the loads should fit the criteria of the BP only rifles and loads. No spitzers, not even what I would call simi-spitzers. In other words, short ogive and large meplats, such as the Hudson and Pope molds that I've seen.
Spitzers didn't come until duplexing was well establish and the only one that I know of is the 319323 (French).
Records that are trying to beat or duplicated should also be done with the same twist as was used to set a record.
There is a LOT to be considered here or just leave the BP to what was available before 1917 and that includes duplex loading.
Frank