Depends if you’ll shoot pellets, slugs, or both. As far as pellets both the .22 RDM and .25 Exact Heavy outperform either .30 pellet in the wind - highest BC .25 Exact Heavy, then .22 RDM, then the .30 pellets (44.75 and 50.1).
If shooting slugs probably because there are more choices the .22, but generally terminal performance is similar unless you do enough mods on your .22 to shoot very heavy slugs but the selection is minimal. For commonly available slugs at reasonable prices, the heavier .25 are what I shoot in my Impact - the 43.5 grain NSA. BC is “only” about 0.110, but they get the job done out to 200 yards, and are $18.95 for 225 slugs.