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Long Range Hunting & Shooting
Difference between the 6-284 and the 6.5-284
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<blockquote data-quote="MontanaRifleman" data-source="post: 386334" data-attributes="member: 11717"><p>TH, have you ever loaded with RL17 before? I have got increases of 200 fps in both the 300 WSM and 25-06 with RL17 and no excessive pressure signs. In the 300 WSM I went from 2990 with H4350 to 3190 with RL17 and 180 E-Tips and no pressure signs. In the 25-06, I went from 3300 fps with Retumbo and 110 AB's to 3500 fps with RL17 and from 3200 fps with Retumbo and Ballisitc Silvertips to 3400 fps with RL17 in a 26" barrel - and no pressure signs. My primer pockets are holding up just fine. I might be wrong, but I think I could probably get close to 3200 fps with 140 bullets out of the 6.5-284 Norma without excessive pressure in a 26" barrel. Nosler is showing 2925 with RL22 (I'm assuming it's a 24" test barrel) and I'm sure I could easily beat that with RL17 in that cartridge. Just guessing based on my previous experiences.</p><p> </p><p>On the accuracy between the two cartridges, maybe your 6mm rifle was simply a better shooter than your 6.5 rifle or you came across a better load. My personal belief is that rifle quality in materials and craftsmanship are the number one factor in rifle accuracy followed by good load development. I think that on average if you take to rifles of different calibers built to the same specs with the same components by the same smith they are going to be very close in accuracy and it would be a toss up as to which might be more accurate. JMO. For LR work, I think the 6.5 might hold a slight edge in combined BC and velocity for trajectory and wind bucking. For hunting, there is no question that the 6.5 is going to be a better choice. If I could have both, I would. If I had to make the OP's choice, I would pick the 6.5</p><p> </p><p>Edit... for hunting coyotes and smaller, I dont think the 6.5 holds much of an edge... but I would still pick the 6.5 for the other reasons. I think the 6.5 barrel would last longer too.</p></blockquote><p></p>
[QUOTE="MontanaRifleman, post: 386334, member: 11717"] TH, have you ever loaded with RL17 before? I have got increases of 200 fps in both the 300 WSM and 25-06 with RL17 and no excessive pressure signs. In the 300 WSM I went from 2990 with H4350 to 3190 with RL17 and 180 E-Tips and no pressure signs. In the 25-06, I went from 3300 fps with Retumbo and 110 AB's to 3500 fps with RL17 and from 3200 fps with Retumbo and Ballisitc Silvertips to 3400 fps with RL17 in a 26" barrel - and no pressure signs. My primer pockets are holding up just fine. I might be wrong, but I think I could probably get close to 3200 fps with 140 bullets out of the 6.5-284 Norma without excessive pressure in a 26" barrel. Nosler is showing 2925 with RL22 (I'm assuming it's a 24" test barrel) and I'm sure I could easily beat that with RL17 in that cartridge. Just guessing based on my previous experiences. On the accuracy between the two cartridges, maybe your 6mm rifle was simply a better shooter than your 6.5 rifle or you came across a better load. My personal belief is that rifle quality in materials and craftsmanship are the number one factor in rifle accuracy followed by good load development. I think that on average if you take to rifles of different calibers built to the same specs with the same components by the same smith they are going to be very close in accuracy and it would be a toss up as to which might be more accurate. JMO. For LR work, I think the 6.5 might hold a slight edge in combined BC and velocity for trajectory and wind bucking. For hunting, there is no question that the 6.5 is going to be a better choice. If I could have both, I would. If I had to make the OP's choice, I would pick the 6.5 Edit... for hunting coyotes and smaller, I dont think the 6.5 holds much of an edge... but I would still pick the 6.5 for the other reasons. I think the 6.5 barrel would last longer too. [/QUOTE]
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Difference between the 6-284 and the 6.5-284
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