Just finished rebuilding my restored .20 HW77 MK 2

[MattyBoy]

first of the new year,well done pal,very nice,happy new year.

Thanks Den

HNY to you and yours too

[mrto]

Lovely job,congratulations and an inspiration to me as I have just enbarked on the refinishing of a 77K.ATB.

[egghead]

Hi,
There is an interesting article about enlarging transfer ports and its effect on ft/lb in this months airgun world by Jim Tyler.
May be worth a look!
Dave

[RichardH]

Thats come out really really well Matt

Stock looks fantastic

Rich

[MattyBoy]

Stock looks fantastic

That'll be the orange spacers then

[WilkieWebley]

Hi Matty,

Well done, a beautiful job and a credit to you.

Goot shooting, all the best, Roy.

[MattyBoy]

Hi,
There is an interesting article about enlarging transfer ports and its effect on ft/lb in this months airgun world by Jim Tyler.
May be worth a look!
Dave

Cheers! I'll buy it!

I have a copy of the original J Bowkett HW77 tuning guide and he recommends something around 3.8mm tapering to 4.0mm at the piston side, for the tranfer port.

I went from 2.9mm parallel out to 3.5mm parallel so well within the max modification.

I think I need a V-Mach piston seal

Might order one now

I don't think I need the full kit