I've been loading on a rock chucker for 40 years. I load for 9 rifle calibers and 7 handgun calibers. I don't benchrest shoot but when I say precision, I want all of my rifles to shoot sub moa @ 100 yds. Now, can you get this kind of precision from a progressive? I have an RL550 with everything except a case or bullet feeder or Dillon dies. I've loaded a bunch of handgun ammunition on it and its a nice machine. I'm wondering if anyone out there actually loads hunting caliber rifles on thier 550? Wondering if I'd be better off to sell the 550, keep loading for rifles on the Rockchucker and buy a Square deal with caliber conversions for all my handgun loading. What do you think?