Barrel TP mod

[joe hickey]

Here’s an Idea I tried to increase the TP volume on a Hatsan barrel. It worked great. All I did was drill a hole completely through the barrel, then using a dremmel, I made channels from the main TP to the other two. Then cleaned up the burr on the inside.
Here’s a pic. .https://imgur.com/a/l5Isx

[wesb2007]

Cool! What kind of performance increase did you see from it?

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[joe hickey]

Cool! What kind of performance increase did you see from it?

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I used it on my SSP and got approximately 50 fps more. No loss in accuracy. A pcp would likely do better.

[joe hickey]

I forgot to mention in case there are a few newbies reading. The holes in the barrel provide more air to the pellet without having to enlarge the main TP, which can only be enlarged slightly or else the pellet will fall in. Of course the TP in the valve and breech must be opened up as much as you like, or deem necessary.

[wesb2007]

That's a nice velocity increase, great idea!

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