WB
I have a 16" barreled 1894SS in .429 GNR
Monday, June 07, 2021, 14:57

I shoot the LEE 310 FNGC and garner right at 1900 fps with H110. I run out of capacity before pressures become an issue. A 240 gr. SWCGC runs 2150 fps in my gun. That's about factory .444 Marlin speed!

Doug has shot several things with the .429 GNR using Lee 310 gr. cast bullets. He used a 12" and 15" Encore barrel with brake. Velocities always ran from 1700-1800 fps and even in my 9.5" SRH (no mechanical mods other than re-chambering) I can get a solid 1550 fps from the 310 LEE. Seating out the bullet to the rear groove and adding another grain and a half of powder I kiss 1600 fps. In the revolver I lose some efficiency with lighter bullets, I think the H110 needs something to push against and those heavier bullets work great. The Jacketed 265 gr. Hornady is probably one of the best too.

I loaned my .429 Marlin to two newbies at HHC that had never touched it before, both loaded with the LEE bullet, one shot each, two dead hogs!

4227 and 1680 at full capacity make good "light" loads equaling most .44 Magnum factory rounds.