Best thing you can do. Guys here are nice. However, for the most part, they are readers/listeners not shooters - guys on Dougs are experts. Look for 2,300 fps and you are there.
Start:
Fed209, 43 SR4759, and a 250 sst in a black MMP sabot.
What you need extry:
torch clean kit, scale, powder vials, vent liners, 4759, F209primers, some pipe tape, and some 250 sst's.

300gr xtp
Mmp hph-24 short (ordered)
Accurate arms or 4759 whichever i can find first

Primers CCI or federal? Not sure those make much of a difference.

If your not shooting over 150 yds stay with a 300 gr. From what i read the 250 gr. Have been known to grenade at smokeless speeds at short distance.

Yup.

WHat do you mean grenade? Blow up in mid air, or blow the crap out of a whitetail?

Oh, if you want more range just practice with the XTPs and shoot the Shockwave or SST bullets in the same weight. Your 100 yard impact shouldn't change but you will need to very this. You will get more range with less drop with the SW or SST.