I've got the same gun, and it was stiff early on, but now it's slick as oiled silk. It's always shot well, but I broke the barrel in very carefully. After 500 rounds it started to smooth out, and nowadays, after about 3000 rounds, it couldn't possibly get any better. Mine wears a 2X Scout Scope, and is easily my favorite blaster. And with ammo it likes, any five-shot group over an inch at 50 yards is MY fault, not the gun's. You have chosen well, Grasshopper!
Enjoy that purty lil thunderstick!
Papajohn