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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
A .270 possible for a 1k target gun?
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<blockquote data-quote="cowboyarcher" data-source="post: 764363" data-attributes="member: 14163"><p>BC is a big part of it but FPS makes up for some. It's hard to compare a 308 and a 270 as they are truly in different classes. </p><p></p><p>A 270 Win running a 150 Berger at 2840 fps with 100 yard 0 at sea level will have 325" drop and 85" 10mph drift. </p><p></p><p>A 270 Win under the same conditions with a 165 gr Matrix at 2750 fps and BC of .65 drops -305" and has 66" drift. </p><p></p><p>A 308 with the 185 gr Berger at 2550 fps drops -397" and drifts 90". </p><p></p><p>Besides that the 165 gr matrix bullet seems to be stabilizing from a 1:10 twist barrel and Berger recommends a 1:10 twist for their 150's. The former should be around .650 BC and the later .531. </p><p></p><p>Also a consideration for the OP is the fact that he is already running a 270. If all he has to do is pick up some new bullets he can save some cash switching to a new caliber and spend more time shooting.</p></blockquote><p></p>
[QUOTE="cowboyarcher, post: 764363, member: 14163"] BC is a big part of it but FPS makes up for some. It's hard to compare a 308 and a 270 as they are truly in different classes. A 270 Win running a 150 Berger at 2840 fps with 100 yard 0 at sea level will have 325" drop and 85" 10mph drift. A 270 Win under the same conditions with a 165 gr Matrix at 2750 fps and BC of .65 drops -305" and has 66" drift. A 308 with the 185 gr Berger at 2550 fps drops -397" and drifts 90". Besides that the 165 gr matrix bullet seems to be stabilizing from a 1:10 twist barrel and Berger recommends a 1:10 twist for their 150's. The former should be around .650 BC and the later .531. Also a consideration for the OP is the fact that he is already running a 270. If all he has to do is pick up some new bullets he can save some cash switching to a new caliber and spend more time shooting. [/QUOTE]
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A .270 possible for a 1k target gun?
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