I've probably got 500 rounds down range with the 175 SMKs and they work good. However, I spend most of my time shooting less than 500 yards so I thought I'd give the 168 SMK's a try. I only bought one box of the 168's hoping to see what they will do quickly. (wishful thinking) My question is if you only had one box of 168 SMK projectiles, how would you go about giving them a fair test? start with a condensed ladder? Using IMR-4064... Thanks for your help...