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Tennessee Gun Owners Forums
Rifles
.300 Blackout issues
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<blockquote data-quote="Urban_Hunter" data-source="post: 5778602" data-attributes="member: 12353"><p>When you have someone cranking out the quantities BCA or palmetto has, I assume it's an inevitability at their price point. </p><p></p><p>Very common for subsonic 300BO to be undergassed, there just isnt a lot of pressure to work with, made worse in a pistol length gas system. An adjustable block would be of no benefit, the port in the barrel is just too small. I've never even heard of an overgassed 300… you're just trying to get all you can get to cycle that thing reliably.</p><p></p><p>On mine I just found the drill bit that matched the gas block port and opened the barrel port to the same size. Now it's throwing around 4oclock at 1015fps on a 220gr Barry's. Rock solid dependable, just took some tweaking</p></blockquote><p></p>
[QUOTE="Urban_Hunter, post: 5778602, member: 12353"] When you have someone cranking out the quantities BCA or palmetto has, I assume it’s an inevitability at their price point. Very common for subsonic 300BO to be undergassed, there just isnt a lot of pressure to work with, made worse in a pistol length gas system. An adjustable block would be of no benefit, the port in the barrel is just too small. I’ve never even heard of an overgassed 300… you’re just trying to get all you can get to cycle that thing reliably. On mine I just found the drill bit that matched the gas block port and opened the barrel port to the same size. Now it’s throwing around 4oclock at 1015fps on a 220gr Barry’s. Rock solid dependable, just took some tweaking [/QUOTE]
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Rifles
.300 Blackout issues
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