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The Range
Rifle & Shotgun Discussion
Barrel length vs velocity 28" to 16.5" .308
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<blockquote data-quote="dennishoddy" data-source="post: 2970006" data-attributes="member: 5412"><p>Good data. For the record, I've never shot a .308. But I've shot hundreds upon hundreds of rounds of 30-06, and .270.</p><p>some of the Crusty old hold overs that serve me well. Last Elk was a head shot at 440 yds midway between the eye and ear socket. Head is still in the freezer waiting to extract the Barnes 168 grain TTS bullet. </p><p>I've LOL'd at a lot of shotgun shooters that think grandpa's old goose gun with a 30"+ barrel generates more velocity than an 18". I don't have chrono data to prove it, but magazine articles say the powder burn is done in the first 16" depending on the powder. </p><p>Shotgun speeds are tough to chrony unless you have one of the barrel mounted ones like was pictured in the OP's post #1</p><p></p><p>Tried it with my F1 chrony, but you're only getting the wad speed as it comes in second behind the shot column.</p></blockquote><p></p>
[QUOTE="dennishoddy, post: 2970006, member: 5412"] Good data. For the record, I've never shot a .308. But I've shot hundreds upon hundreds of rounds of 30-06, and .270. some of the Crusty old hold overs that serve me well. Last Elk was a head shot at 440 yds midway between the eye and ear socket. Head is still in the freezer waiting to extract the Barnes 168 grain TTS bullet. I've LOL'd at a lot of shotgun shooters that think grandpa's old goose gun with a 30"+ barrel generates more velocity than an 18". I don't have chrono data to prove it, but magazine articles say the powder burn is done in the first 16" depending on the powder. Shotgun speeds are tough to chrony unless you have one of the barrel mounted ones like was pictured in the OP's post #1 Tried it with my F1 chrony, but you're only getting the wad speed as it comes in second behind the shot column. [/QUOTE]
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Barrel length vs velocity 28" to 16.5" .308
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