When I got my 52 in .22 (my 1st and only air rifle) I picked up a couple tins of ammo at a local shop just to see what was what. (Translation: I took the only 2 tins of .22 pellets they had).
After I finished off a tin of benjamin 14.3 gr I decided to invest in my own sampler, so I purchased the following:
Beeman Crow-Magnum - 18.20 gr
JSB Exact - 15.8 gr
Beeman Silver Bear - 12.65 gr
Crosman Premier Hollow Point - 14.3 gr
Logun Penetrator - 20.5 gr
Beeman Kodiak - 21.10 gr
Now from what I read, I expected the Kodiaks, the Exacts, and the Premiers to do the best.
What I found was...my 52 really likes heavy pellets...a lot.
I took 25 shots (5 shot groups, 5 targets per page) with each type of pellet.
The Logun Penetrators did the best of all, followed cloesely by the Crow-Magnums.
It seemed that the heavier pellets required a bit of extra oomph to properly seat them in the barrel and maybe this helps.
Another idle observation was that (and maybe I am making this up) the heavier pellets seemed less hold sensitive -- meaning that if I was really on my game and didn't shake I could get some very nice shots with the Silver Bears or the Exacts or the Premiers.
But for some reason, the Crow-Mags, Penetrators and Kodiaks (to a lesser extent) just seemed more forgiving.
Now it could just be coincidence, but I was wondering if anyone else noticed this in their shooting experience.