Same here in my FX Glad mk2 those pellets are useless in my barrel. Best Pellets are Fx ST followed by JSB King and king heavy mkII HN barracuda and barracuda hunter are not so bad also but a little bit under in long range (100m)
Been using the Grizzlys off & on for a few years now in my Rapid Mk2 .25 the only way i could get them to work well was to lap/polish the choke on my 23./1/2 inch barrel it made a massive difference.After doing above im now able to take pigeons out to 130yds my rifles doing 53ftlbs average 880ftsec.This is the way to go tune pellet to barrel.Atb Tel.
I bought a couple tins in anticipation of the .25 slug liners for my Impact. However, the .25 liners have been delayed but I will run them thru the 700 STX barrel and see what the BC is.
the only use by me is ...Drilling out to hollow Point and filling with flashpowder...at 20-30 meter i can hit rats with them...devastating effect for the varmint
I have great luck with them in my Hatsan BullBoss. They are fairly accurate and mushroom very well. Only thing is they don't have the penetration of the Hornets. I have a planned project to take the tips off of a dozen or so Hornets and add them to the Grizzlys. I have no idea how this will affect the ballistics and pellet weight distribution, but it should be fun to try!