Home Forums Hunting & Shooting Express Rifles and Big Bores Only Question for the .400 Whelen Crowd

Then forget the fire-forming mumbo-jumbo. 5 loads from 60.0 to 68.0 grains with 68.0 grains being a full case, non-compressed load, noted as maximum.
The velocities are ballpark anyway for anyone with a different rifle, and are not much different from fire-forming to formed-case firing,
in the .400 Whelen-Petrov case, another weak pun intended.

If anything, that would be a safety margin with the use of fire-formed brass for assembling the real-deal, hunting ammo.
I SWAG your 68-grain load is less than 60,000 psi.

Looks like the slower burning, heavier-charged, more compact CFE-223 ball powder
gives the faster burning, lighter-charged, bulkier H4895 a run for the money.

Which of the two powders is more temperature independent is a possible bonus for H4895.

BTW my "proof-of-goof" load was with compressed H4895, 67.0 grains,
only about 107% LR/net fill compressed without drop tube use,
in that cartridge so similar to the .400 Whelen-Petrov.
DON"T TRY THAT AT HOME WITHOUT ADULT SUPERVISION.

Will report back here when I get the CFE-223 loads posted at ammoguide.com.