hw99s piston.

[Mark A]

Whats the fit of the spring on the guide like? Did it get rid of any twang? They look like pretty decent kits from the pics.

[TonyL]

there was TonyL. Top hat ,guide , 3 washers of different sizes and the spring. It's only got the guide and top hat in just now.

Before I fitted the kit the back block was half way in the action. With the kit and new spring it's outside the action if you get what I mean. The original spring is way shorter than the new one.

Hopefully I will get it chronographed this weekend.


I used Ep2 moly grease on it. It's dieseling a bit and a bit of recoil. It would not do the pellet on the scope cap test lol.

As long as it's accurate for bunnies I will be happy.

Cheers for that info.

Be interesting to hear chrono results. Quite a lot of preload there, as you have pointed out.

[bighit]

The guide is a tight is fit on the guide. The spring needs the sharp edges polished.

There is a fair bit of preload TonyL. More than I thought there would be.