p90 with m100 only getting 274fps?

[tonysaydo]

why do you think it's firing a bit below standard. how much do z1 normally charge to work on them and get to 350fps?

[Gaffa]

Re: p90 with m100 only getting 274fps?

Firstly - are you sure it's an M100? If yes, how old is it?

The most probable answer for this is that you've got a bad airseal somewhere. Take the gearbox out and check that the cylinder is sitting in the right place, with hardly any space either side of it. Then, wiggle about the Air Seal Nozzle, and if it's loose, then you'll need to place it on again, more firmly, which might require disassembly of the GB.

If that doesn't work, try using a different air seal nozzle.

Also check that your hop is all the way off when your doing chrono results, not all the way on.

[jagillham]

Re: p90 with m100 only getting 274fps?

Forgot the easy one there, clean the barrel out. :D

[tonysaydo]

Re: p90 with m100 only getting 274fps?

thanks for your help, i'll check it out, i didn't realise that the hop makes a difference.