Triple Seven fffg Catridge Catastrophe???

[VICIOUS]

Here we are, NO Blackhorn 209 to be bought.
So a friend did a deep dive into stock pile and found triple 777 in 2F and 3F so sticking to the DATA ,guess some 2F is in my future for 38-55.

[Gobeyond]

To me, wouldn’t 3fffg t-7 be ok in pistol cartridges? Not much other use for it. I use 2ffg T-7 in my 43 Mauser antique. It shoots ok but kicks the heck out of me.

Do any of you use 3fffg black powder in rifle cartridges, specifically an 150 year old antique? Where would you say the pressure is on this use?

[Gobeyond]

Just use 15% less to start and add a wad!

[Larry Gibson]

I use Tripple fffg in my 45-70 TDs [original and H&Rs]. I load 46 gr (by weight) of it under a 16-1 cast Lee 458-405-HB sized .4615 and lubed with my BP lube (beeswax/olive oil). OAL is 2.572. Measured psi (Oehler M43) runs right at 28,000 (the SAAMI MAP) and 1334 fps out of a 24" barrel.

I use fffg BP in the 45-70 also now that Goex Cartridge isn't available.