Let me give you an example of why I no longer use Buffalo Bore® and switched to Underwood® instead. These are identical loads in pressure, velocity, and foot-pounds energy...
BUFFALO BORE® AMMUNITION
HEAVY .41 MAGNUM OUTDOORSMAN
265 gr. L.W.N. (1,350 fps/1,072 ft-lbs)
20 Round Box
ITEM 16A -...