H3
First off I would like to welcome you to the forum AND congrats on the new SMOKER
IMO - 100gr loose 2fg 777 and a 250gr TC Shokewave will shoot good for you.

But the proper way would be to get you about 3to4 diff kind of bullets to try and see what your gun likes the best,
Start with 80gr of powder and work your way up to see what the most ACCU charge is out of your gun also

Good bullets to try - Speer Gold Dot 250/300gr - Hornady XTP 240 / 300gr - Barns MZ or TMZ 250 / 290gr
Tc Shockwave 200 / 250 / 300gr - Nosler PG 260gr /
All of these are Proven bullets
BUT DO your self a Favor and stick with LOOSE POWDER