When I started loading for the 35 Whelen velocity pressure levels were held to 2600 fps for 225 gr bullets. The 225 NPT has long been my goto bullet in the Whelen, guy can argue the 200's or 250 s for this or that I don't care, I use the 225 gr NPT on everything that needs whelenizing. Flat works started at 2600 fps with a max dose of 4320. Kills everything dead and you can eat right up to the bullet hole. I won't gnash my teeth , pull out my hair or wail inconsolably about 4320's demise, I am damn sure that there are other powders that can replace it for me. Magnum Bob


" Cheapest velocity in the world comes from a long barrel and I sure do like them. MB "