.458 bulging Starline

[Kurt]

Doug using a finer granulation is something you have to work out with a ladder load. All this depends on the bullet weight and what ever your load is.
I never had satisfactory results with 45 bullets down around 400 grains other then the trapdoor. It does fine using a 400 gr.
I use 1F,1.5F, 2F 3F and I can get them all to shoot to my satisfaction. It just takes some load developments and keeping records for the particular bullet used. Getting load information from someone else other then using your rifle can only be used as a guide for a starting point then the rest is behind your buttplate and down in the mole den loading.

OE powder my groups peak at .190" to .230" compression. This is using 2 and 3F. It actually has three accuracy peaks I find in my .44-75 caliber using 3F OE. Using zero compression to a very highly compressed load.