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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
a good Long Range non barrel burn caliber
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<blockquote data-quote="scottyd2506" data-source="post: 874685" data-attributes="member: 19778"><p>I thought the 170 .277 was around .7 bc .703 or something.. not bad.</p><p> The Berger 180 in 7mm is .674bc , so the .277 to .284 seems right. the 195 EOL 7mm at .792 bc is unreal..</p><p></p><p> I was thinking a 270 WSM with 8 twsit.</p><p></p><p> I still think the 284 would be the least barrel burner after the 338 RCM</p><p>a 195 EOL from a 284 at 2800 fps is going to be hard to beat. good barrel life and velocity, the big 7mm's will beat in in velocity. but how is 3200 fps going to help when groups are 2 inches at 100 yards, most of us know the Berger are most accurate at around 2900 fps or less. the 8 and 8.5 twists spinning the J4 jacket too much seems to effect accuracy. </p><p></p><p> Anyone know how long a barrel will last on the 300 WSM? seems it's not too overbore 230's at 2700 fps is tempting.</p></blockquote><p></p>
[QUOTE="scottyd2506, post: 874685, member: 19778"] I thought the 170 .277 was around .7 bc .703 or something.. not bad. The Berger 180 in 7mm is .674bc , so the .277 to .284 seems right. the 195 EOL 7mm at .792 bc is unreal.. I was thinking a 270 WSM with 8 twsit. I still think the 284 would be the least barrel burner after the 338 RCM a 195 EOL from a 284 at 2800 fps is going to be hard to beat. good barrel life and velocity, the big 7mm's will beat in in velocity. but how is 3200 fps going to help when groups are 2 inches at 100 yards, most of us know the Berger are most accurate at around 2900 fps or less. the 8 and 8.5 twists spinning the J4 jacket too much seems to effect accuracy. Anyone know how long a barrel will last on the 300 WSM? seems it's not too overbore 230's at 2700 fps is tempting. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
a good Long Range non barrel burn caliber
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