TX35W
I run hogdon CFE223 in my Whelen using Speers reloading data. I have a standard Whelen chamber and can load to a coal of 3.4 inches this gives me a chroboed velocity of 2,700fps out of my 25 inch one in 12 barrel.
With the 310s I use an 18 inch drop tube and H4350.
This allows more powder in the case without any compression. My best loads gave 2,455 fps and no pressure signs but recoil was rather stout. I settled on 2,350fps and call that my working load.
With CFE223 275gn Woodleigh PPSP projectiles chronoed a tad under 2,600fps with no pressure signs
Bob
