Hey, Trans Am (WS6) Driver! Do you use junk oil in that LS1? I bet not. Buy some good ammo for your training to get the most of it! You are undoubtedly taking a carbine class to be better prepared for:
1) Your job
2) SHTF
3) Just to be better at your sport
........all 3 reasons above scream at you to use high quality ammo.
Best of luck at the class and let us know how it turns out.
If you're looking at 55 grain, I highly suggest the IMI Samson 55 gr stuff Widener's sells. Ive been thru 2000 rounds of it, and working on my 3 rd case now, in the past 3 months, and have zero problems with it. Its also more accurate than Q3131A out of 3 of my AR's (Colt 20 and 16" HBARS [1/7 and 1/9] as well as an RRA (16" 1/8 Govt Profile). It only 50-100 FPS slower than Q3131A, but Ive found it to be more accurate across the board no matter what AR I shoot it from. And for $175 a case (167.50 if you buy 2), I think its the best deal out there for 55 grain stuff right now (other than the odd $90 can of Malaysian M193 thats floating around which is a RIDICULOUS deal these days).