Free: Contests & Raffles.
I shoot the Federal B.O.R 270 gr. in a T/C Blackdiamond, very easy to load, shot after shot with no cleaning. Picture from one recovered from a deer.
My Evolution hates Powerbelts. I almost had to stand on the ram rod to get them seated. I use the Barnes and have good luck and accuracy. A clean barrel will help a lot.
Every gun is different and for me requires a lot of testing and shooting to really know one will shoot with a particular combination. LOTS and LOTS of testing unless you get a combination you are happy with early on.