Next month I am hoping to do a "ladder test" with the 500 ARNyati (freebore 0.255") using H4198 powder, WinLRMagnum primers, and 350 grain CEB raptor bullets. For comparison, 100grains of H322 and 350grain raptor does 2711fps in the rifle.

I would like the ladder shots to be within 2500fps and 3000fps. My gut guess would be to shoot loads from 84.0 grains H4198 to 95.0 grains H4198, at intervals of 1.0 grain each.

Does that look about right with QuickLoad or from direct experience with anyone?

As a first group for testing the tips, I was thinking of loading up 3 rounds at 90.0 grain without the plastic tip and 3 rounds at 90.0 grains with the plastic tip (adding 10 grains weight to the bullet).

Ultimately, accuracy and the ladder test may dictate the best velocity and load for my 22" McGowen barrel. Anything between 2500 and 3000 should be devasting and usable out to 300 yards. If differences are imperceptible, then I may aim for about 2750-2850 fps with the 360 grain projectile.

Any thoughts, help, or suggestions?

Thanks,
the buffalo of Tanzania will appreciate your input.
(crossposted from BigBore rifles)