Has anyone tried the PPU .308win 168 gr hp? I picked up 4 boxes for a decent price. I have only shot 20 rounds of the Remington core-lokt 180gr through my Savage and haven't fired this PPU stuff yet, but I have cycled a few rounds and it definitely is a tighter fit, I'm not sure how concerned I should be but I wanted to know your experiences with this stuff. from what I read online, people say it flys alright