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ThunderBeast Ultra 5" and 6.5 Grendel Preliminary Test Results
#7
LRRPF52 Wrote:Also, a 30 cal can might be the better choice for gassers since the 6.5mm Ultra's are so efficient, they build more back pressure in a gasser, causing more ejection port supersonic gas escape noise.

I just tumbled across the TBAC web site and was highly interested since they are one of the few 6.5 cans out there ...

But I have to ask the dumb question here - gasser = gas piston?
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ThunderBeast Ultra 5" and 6.5 Grendel Preliminary Test Results - by Capt. Morgan - 10-18-2016, 01:50 AM

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