Captured 86 shots on the lab radar for this setup:
10.5" ARP 6.8 SPC II Barrel
90gr Gold Dot bullet
AA2200 @ 30.4gr
Loaded to cannelure
Avg FPS: 2,480
Avg FPS @ 100y: 2,111
Avg FPS @ 150y: 1,986 (very small sample of 6 shots)
SD: 20+ FPS, I need to work on this, I haven't tuned this load for accuracy or SD. This exercise was more about velocity at 100y
Summary: I wondered if the 90gr GD in a 10.5" barrel be used for hunting at 100y, and in, based on it's minimum opening velocity. I don't know what that is for the 90gr GD (I'm sure it's in an xman thread) but assuming it's around 1,800 FPS, I think we could conclude an expectation of decent expansion at 100y (2,111 fps) with a 10.5" barrel and this bullet. I don't plan on hunting with this barrel, but it could act as a self defense round for large 4 legged animals here in Washington (hiking/atv/truck gun).
I have the same 10.5 set-up with my old Bushnell HoloSight and a 5X tip-off magnifier. I built it for ear-shooting pigs from tree stands. I just started putting together some 90gr GD loads for it. (got 250 from RMR) This will be the mid point of the first ladder I run in the next couple of weeks. Thanks for the post bud, saved me a lot of research.