Richard
Ya it look's sweat and in a cowboy with a 26 Inch barrel

it should be flying .

I was thinking of making the same thing but making the bullet a 500 Grain in the 26 inch barrel that should add another 267 FPS to the 1886 FPS and at under or close to 40.000 PSI that make it a lighter load then the Grizzly's or the buffalo bores i have beeen shooting thay are 42.000
to 43.000 PSI

The only realy question is just how hard can i go with the lead mix pre babit 10% or can a guy go higher before i start effecting the pressure level by making the bullet to hard ?