Hi all, I know this has been covered a few times but I would like some recommendations specific to my tune and the materials Ive got.
Been doing a fair bit with my refurbishment of the mk1 HW80, I turned down and buttoned a standard piston which I'm chuffed with and I have a few others to play with etc.
I have recently acquired a Paul Short short stroked piston and would like to go that way with the gun. I believe its a 65mm stroke piston, now I've weighed it and its coming in at 300gr so standard weight. I have the facility to lighten this piston with a mill and extra slots if needs be, so my quandary is with transfer port modification (if any) and the following combinations:

.Leave the piston weight at 300gr at the stroke length
.lighten the piston to 240gr

I just don't wanna cock this up or do anything unecassary and I'm happy to experiment but I would like some advice before I continue with any transfer port modification if any as this is a permanent alteration.
Anyone with similar set ups?

Regards