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Jim Gillilan's Custom 1322 Carbine

Jim Gillilan's Custom 1322 Carbine w/Custom Stock

Here's one I'm especially proud of and is modded all over, doing 12fpe at 15 pumps.
Stock is Teak from Thailand and super light weight 1322 Carbine!

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It depends on the valve volume,

October 26 2011 at 1:37 AM

CO222  (Login CO222)
Crosman Forum Member
from IP address 118.148.228.161


Response to good call the fpe is exponential

Approximately proportional to the bore volume, which is a square relationship,
but the relationship drops off as larger bores deplete a given valve volume more.

Bore volume ratio per length: (.177 , .22, .312) is approx. 1 : 1.5 : 3.1

The way I did the receiver it did away with the clamshell, it can easily take 9mm or up to .50 barrel.
After working on 1008's, 357's & nightstalker I had enough of exploding clamshells.

 
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