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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
6mm remington
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<blockquote data-quote="AZShooter" data-source="post: 870851" data-attributes="member: 5219"><p>When my two friends and I made 6mms to shoot the 115 DTAC a 1 in 7.5 twist was recommended. A few said they could get the 115 to stabilize with a 1 in 8 but it was not the norm. </p><p></p><p> We also discovered that there were issues with the 115 Berger VLDs not being able to withstand the twist when pushed hard with a 6mm-284. That left the DTAC as the only viable 115. </p><p></p><p> </p><p>1 in 8 will do fine up to 107 gr. Quite frankly I don't see an advantage in any of the 115s now that Berger offers the 105 match target hybrid with a BC higher than their 115 offering. .547 vs .545 </p><p>I will admit that the DTAC has a higher BC which is generally reported as .585 but the velocity is quite a bit slower. </p><p></p><p>I get 3250 fps with the 115 DTAC and 3445 fps with the 105 Berger hybrid from my 6mm-284. The Berger's drift at 500 yds (10 mph crosswind) is 8.2" while the DTAC is 9.1" with same conditions of 4000 ft 59 degrees etc. </p><p></p><p>I have a new Bartlein 5R 1 in 8 twist which will replace my current Bartlein 5R 1 in 7.5 twist when it begins shooting poorly. Round count is close to 1000 with good accuracy. </p><p></p><p> I'll switch to the 1 in 8 and intend to shoot the 105 hybrids exclusively. FYI some hunters are reporting that the hybrid is working well as a hunting bullet. Go to bottom of the page:</p><p></p><p><a href="http://www.longrangehunting.com/forums/f17/7wsm-180-berger-takes-down-two-grizzlies-78901/index7.html" target="_blank">http://www.longrangehunting.com/forums/f17/7wsm-180-berger-takes-down-two-grizzlies-78901/index7.html</a></p></blockquote><p></p>
[QUOTE="AZShooter, post: 870851, member: 5219"] When my two friends and I made 6mms to shoot the 115 DTAC a 1 in 7.5 twist was recommended. A few said they could get the 115 to stabilize with a 1 in 8 but it was not the norm. We also discovered that there were issues with the 115 Berger VLDs not being able to withstand the twist when pushed hard with a 6mm-284. That left the DTAC as the only viable 115. 1 in 8 will do fine up to 107 gr. Quite frankly I don't see an advantage in any of the 115s now that Berger offers the 105 match target hybrid with a BC higher than their 115 offering. .547 vs .545 I will admit that the DTAC has a higher BC which is generally reported as .585 but the velocity is quite a bit slower. I get 3250 fps with the 115 DTAC and 3445 fps with the 105 Berger hybrid from my 6mm-284. The Berger's drift at 500 yds (10 mph crosswind) is 8.2" while the DTAC is 9.1" with same conditions of 4000 ft 59 degrees etc. I have a new Bartlein 5R 1 in 8 twist which will replace my current Bartlein 5R 1 in 7.5 twist when it begins shooting poorly. Round count is close to 1000 with good accuracy. I'll switch to the 1 in 8 and intend to shoot the 105 hybrids exclusively. FYI some hunters are reporting that the hybrid is working well as a hunting bullet. Go to bottom of the page: [url]http://www.longrangehunting.com/forums/f17/7wsm-180-berger-takes-down-two-grizzlies-78901/index7.html[/url] [/QUOTE]
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