I used Metal Tech as the first bb's for my PTW. Worked perfectly for the 3 bags. Bought 2 more bags, it was a nightmare.
Switch to BB Bastards, never had a single problem.
Now using BB Bastards on my GBBR, no problems.
Originally Posted by Mr.Shiney
Yes it is hard to find an Instructor that teaches how to Finger, Suck, Squeeze and Blow all at the same time.