Hey, Going on a prairie dog shoot next weekend. Going to bring 7 rum, .223 savage model 12, and a 22. I'll probably use this marlin model 60 a bit on the trip. I put a 4-12 power tasco scope I used to have on my savage .223 It doesn't have a parrellex adjustment. Is that a big deal? I'll most likely be shooting at 200 yards max for fun on this. Should I be good with this rifle and scope combo? I've been thinking about the BSA sweet 22 scope. What have u guys out there used for imfire rifles on p dogs?