Ratios

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Postby AARON777 » Fri Dec 15, 2006 8:24 am

I built a stock out of 1" like the sniper gun at backyardarsenal.com
I'll be using a golf ball barrel,3" for the chamber and a 1" air activated sprinkler valve

could someone tell me what the best chamber to barrel ratio would be for this setup keeping in mind the stock is actually part chamber and that weight is going to be a factor because its a shoulderd gun?

thanks for any info
AARON777
 
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Postby joannaardway » Fri Dec 15, 2006 8:32 am

With pneumatics, the bigger the chamber, the better for power.

However it does drop efficency quite sharply. Go as high as you can, but don't exceed about 2:1 otherwise you'll be hitting diminishing returns.
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