Anyone else loading 500/+ grain cast bullets in Hornady 45-70 Leverevolution brass?

[THE_ANTIDOTE]

On my low end I am getting about 1060-1100 fps bumped it up a bit and was getting mid 1300's with no sign of over pressure. One bullet I shot into I'd say an 11"-13" thick log went straight through and kept on truckin with almost no deformation, but this bullet did have some babbitt in the mix. I only had five 2 litre bottles filled with water to shoot at and those just vanished after one shot with the bullet getting lost in the dirt backstop.

[cwtebay]

What boolit? Mold? Rifle?
I use a GC version GB6 quite effectively.

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[THE_ANTIDOTE]

500 round nose Lyman 457125 in Hornady short brass out of a 26" barreled Winchester/Miroku 1886 45-90 takedown using Reloader 7.