Years ago the writer and gun enthusiast, Townsend Whelen, developed a 30-'06 small game/grouse load, using a 150 gr FMJ bullet over 18 gr 4759 powder with a Federal primer [don't know if military or commercial brass case]. You can read on this by g00gling 'Townsend Whelen small game load'. After reading such, you can decide if this would work for you.

I suppose that with such lighter loads the possibility of shoulder setback looms its head, so segregating cases might be advisable.

Best of luck.

Dyson