Having some issues with upgrades, wondered if anyone can give me some advice. So I've got a Tac 41, I used some PTFE tape on the cylinder head and round the bucking, put my finger over the end of the barrel, 100% airseal. FPS is reasonably consistent, like +/- 5fps could be better but will do. Wanted to change to a VMP so I got the SB advanced piston head while I was at it and put an airbreak on, the seal is still fine but I'm getting like wild FPS all over the show, I mean +/- 30fps on average and even some wild outliers then.
Anyone got any idea what's causing it? I also tried the SRS cup with the airbreak (the orange one) on my stock piston but that didn't have a decent seal at all, I assume air is leaking through the hole where the airbreak is inserted into the cup so I guess that was just a waste of money.
Anyone got any idea what's causing it? I also tried the SRS cup with the airbreak (the orange one) on my stock piston but that didn't have a decent seal at all, I assume air is leaking through the hole where the airbreak is inserted into the cup so I guess that was just a waste of money.
