I enjoy using the Beeman Kodiak Extra Heavy pellets with my AirForce Talon SS and Condor--these two high-pressure air rifles tend to send regular weight pellets supersonic which negatively effect accuracy. I have found the Kodiak Extra Heavy to be very accurate and extremely hard-hitting. Be aware that Kodiaks tend to destroy regular airgun metallic targets and pellet traps but that destruction and the "wow factor" that follows can also be the best reasons to use them.
I'm on my third tin and truly impressed with these. They've got a very high ballistic coefficient (.0360, or very low drag for a pellet), very low rate of skirt deformation (almost non-existent, honestly), and are heavy enough to retain plenty of kinetic energy downrange. When I use them with my Marauder .22 they have 30.8 foot pounds of KE at the muzzle, and still 16.7 foot pounds at 100 yards. Barrel fouling has been minimal (unlike the Crosman Premiers, for ins..