Using CFE223 I get 2700 FPS with a 250 grain bullet in my 35 Whelen 1885 Highwall
Sounds like experiences vary. Suspect chamber pressures, barrel lengths and bullets make a difference.
I would be curious to know the chamber pressure, regardless of powder, to get a 250 grain bullet to 2700 FPS with a 35 Whelen or 2800 fps in a 358 NM case. North of 70K psi I suspect.
Physics of volume:pressure and potential:kinetic energy conversions are stubborn things.
My load of CFE223 behind a 250 grain bullet pressure tested at 58,000 PSI below the SAAMI max average pressure
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I got banned on another web site for a debate that happened on this site. That's a first
