SV ammo is subsonic. Anything listed under 1125 fps is subsonic.
Of the ammo you listed...federal auto match 1200 fps, cci mini mag hp 1235 fps, cci subsonic hp, cci velocitior 1435 fps, Remington golden bullitt rn 1255 fps, browning small game-target 1255 fps, eley sub hp... only two are subsonic, and the rest are actually high velocity.
Some rifles do very well with HV ammo, yours doesn't.