What now?

[hawken]

I'm developing a hunting load for my new Kimber Montana in 7-08
After breaking in the barrel I loaded 3 rounds each,
43.5gr, .9moa 2860fps
44gr, 1.3moa(max load) 2900fps
44.5gr, 2moa 2930fps
45gr, 1 moa 2980fps
45.5gr, 1.1moa 3030fps
46gr, 1.4moa. 3040fps Still no sign of pressure that I can see.
Nosler brass, 120 gr TTSX, RL15 powder, .050 off the lands.
So, my questions are.
Do I stick with 45.5 gr because of the 1.1 moa and speed and play with the bullet depth? Or, since there is no sign of pressure, try a bit more powder to get a bit more speed first?
Or what???
Next time I will be doing 5 shot groups.
Thanks