Finally I am seeing the die hard hobbyist responses. I was waiting for somebody to say, "Get Both"! LOL
The logic filter so far is, I am gonna roll the .22 cal. Higher sectional density, and better ballistics. 25gr pellet at 850-900fps on a ground squirrel gonna wreck it's day!
I contacted Donny FL moderator place and they suggest the Sumo moderator. 10-4! This Barra 250z is much louder than the Mrod. So, moderator and sit back inside the living room vs the gun barrel out the window. True sniper tactics here...Lol My neighbors are cool AF and they all about me eliminating ground squirrels, but I still want to be low pro about it.
I will put a wind flag at the 60yd marks and get weird with the Kestrel weather station I got for my LR & ELR shooting.

Though there is some wind dynamics going on from the back deck, gunshop, and yard fence to the target area. I'll get it figured out.
@Cantona256 is the "thwack" a new sound for you? I've been hearing it for 40yrs. LOL.