Federal cases are good as they have slightly less case volume than others, for projectiles try either the sierra or hornady 180 RN. You'll need to experiment on your load working down rather than up (without a can on in case of baffle strikes). Ive not done a whole lot of testing but watch out for cold bore shots - mine tended to be very low with the following shots then grouping consistently. This could cause a problem in the field! A 1:12 stabilised the 180's just fine.
Contrary to some advice I've seen loading a BTHP backwards produced awful results, for me anyway, I could actually see the bullet looping and swirling to the target - it held about a minute of barn door literally.