lol No I am a cheap bastard and if I had 16 pounds of a powder that has been used in a cartridge I would try it in my rifle before buying other powder.
4350-4831 is the most common burn rate powders used. You can test it, I don't believe you'll be able to fit enough powder in there that'll get you close to trouble. Modeling shows 49gr will move a 105 over 3100fps at 59k psi. Try to use some your older lots, the stuff from last few years is slower burning than my old stock by a fair bit. I pull this off another site but it's near match to my GRT info.
Nosler listed H1000 as their most accurate powder tested... pushing 105-107 grain pills in 6 Creed. They list 41 to 45 grains max/min with 43 gr being the charge that yielded the best accuracy.
H1000 was far from yielding the highest velocities. But they were respectable enough.
There's only one way for you to find out for sure.
I have been considering testing it as well. Let us know if you try it and how it works for you.
I use H1000 in my 6prc lol. My suggestion, load em long, use a drop tube, add powder till you start to hear the slightest crunch while seating. That's max. Shoot 5 rounds at that charge, if accuracy and velocity is acceptable, run it.......