Buckmaster,
I started with a smokepole last year so take this for what it is worth. I used Powerbelts last year and my CVA Pro Optima liked them...ALOT. I can put very nice groups at 100 yards. I put a nice scope on top of that gun and away I went.
Long story short. I used the 295 grain copper powerbelts, took 2 shots and killed 2 deer. The first deer ran about 75 yards, but was dead on his feet. The 2nd deer was BANG-FLOP from a little over 100 yards.
I liked them and have now bought the new Platinum 270 grain powerbeltsto try this year.
Bottom line is WHATEVER you shoot, just practise ALOT before you go to the timber and you will be fine. Know what powder chargeand what grain of bullet works best for your gun.....there is alot of difference with different guns.