Forum: 300 Whisper Rifles and Pistols
07-26-2010, 01:29 PM
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Replies: 13
Views: 3,402
I have a 10 inch barrel with the same TP555...
I have a 10 inch barrel with the same TP555 adjustable gas block as you in pistol position. With it opened in the wide open position it will cycle 220/240 smk under 8.2 grains of LiLGun.
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