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''All that is necessary for evil to triumph is for good men to glaze over and resume scrolling''.
Try some of the JSB range of pellets.
its been set up to shoot super domes by one of the top tuning boys, something to do with them being one of the most efficient pellets in a spring rifle and a lot of work as gone into the 80. dont really want to mess up the cycle by adding preload.
Efficiency is pointless without accuracy
LOOKING FOR A BSA ULTRA IN .177 and .25
Looks like your gun likes ammo about the 14.5gn weight.
If you check out the following attached link to a pellet weight database you may be able to find something more suitable and quicker
https://www.shootingandscuba.co.uk/s...gun_calibre=22
Atb
Ed
Accuracy at 20 yards isn’t accuracy. It’s just coincidence. A pellet has to be really bad not to manage grouping at that range. Some manage it though.
Try JSB.