Ditto on comments to buy a whole lot of different .22LR subsonic ammo and see what your particular rifle likes ... you can never have enough ammo! I have 2 .22LR subsonic rigs (10/22 Ruger and a Weihrauch bolt action (HW60J?)). I started using CCI subs and never had a problem at all. Great bang for the buck as they say. I started getting into serious pest control work and moved to the Winchester which is made in Australia I believe (don't quote me). The Winchester shoots a little better in the bolt action but it's nearly twice the price so you would expect some improvement.
Because of the costs, my son shoots CCI in the semi auto and I shoot the Winchester. Hope this helps ... keep safe! Gunzrrr
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