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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
.308 Project -seeking advice-
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<blockquote data-quote="BountyHunter" data-source="post: 412408" data-attributes="member: 12"><p>What is your intended purpose fo this gun? All around, Fclass, etc</p><p> </p><p>That answer should certainly drive your considerations on barrel contour, length, chamber etc!!</p><p> </p><p>for example, standard general purpose or sniper configu 308 is using a max 26" barrel (many at 20-24" also) in M24/HV countour while the F Class/Palmas are using a 30" HV or Palma countour and often tight bore.</p><p> </p><p>Here are some thoughts to consider. </p><p> </p><p>If you want the most current info on shooting the 308, go to the "long range target shooting" site linked below. The top palma and F class guys are here and they have some very good insite on reamers in particular. They know all the best combo bullet/twist/reamers and throat combos and there is plenty of discussions there for you to read. </p><p> </p><p>Absolutely no better place for info on the 308.</p><p> </p><p><a href="http://www.usrifleteams.com/lrforum/index.php?http://www.usrifleteams.com/lrforum/forums/" target="_blank">Sign In</a></p><p> </p><p>IMO the last bullet you want to set up a 308 for is the 168 SMK. It will not normally reach 1000 as it loses stability most of the time at 900 or so. So why even use it for anything, either go to the 175/185 or one of the new 155s.</p><p> </p><p>Their seems to be a general consensus that either you use the 175/185 gr bullets or one of the new 155s. Probably 90% of 308s are set up for one of those two bullet classes. Both will reach 1000 plus and more but require substantially different throats in particular and twists (1-11 vs 1-13) according to most. </p><p> </p><p>Now there are certain reamers that will allow use of most bullets with trade offs at one end or the other and seem to work well. </p><p> </p><p>You have 3 different new 155s and they all vary in throat requirements and a longer throat (for 175/185 plus) will give you a lot of jump when using the 155s in that throat. </p><p> </p><p>Call Dave Kiff at Pacific Tool and Gauge and discuss reamers with him once you decide what the guns purpose is as he has a couple very good specialty and overall use 308 reamers he recommends. Buy your own and keep it for rebarrelling later. </p><p> </p><p>Better plan on a 20 MOA base too also as the 175/185 at 2650 will normally take 38 MOA to get to 1000 and the 155s will be 2-3 MOA less.</p><p> </p><p>Highly recommend the standard Lapua 308 brass or their brand new Lapua 308 palma brass that is just coming out.</p><p> </p><p>Varget, 4064 and RL 15 seem to be the go to powders with CCI BR2, WLR primers.</p><p> </p><p>BH</p></blockquote><p></p>
[QUOTE="BountyHunter, post: 412408, member: 12"] What is your intended purpose fo this gun? All around, Fclass, etc That answer should certainly drive your considerations on barrel contour, length, chamber etc!! for example, standard general purpose or sniper configu 308 is using a max 26" barrel (many at 20-24" also) in M24/HV countour while the F Class/Palmas are using a 30" HV or Palma countour and often tight bore. Here are some thoughts to consider. If you want the most current info on shooting the 308, go to the "long range target shooting" site linked below. The top palma and F class guys are here and they have some very good insite on reamers in particular. They know all the best combo bullet/twist/reamers and throat combos and there is plenty of discussions there for you to read. Absolutely no better place for info on the 308. [URL="http://www.usrifleteams.com/lrforum/index.php?http://www.usrifleteams.com/lrforum/forums/"]Sign In[/URL] IMO the last bullet you want to set up a 308 for is the 168 SMK. It will not normally reach 1000 as it loses stability most of the time at 900 or so. So why even use it for anything, either go to the 175/185 or one of the new 155s. Their seems to be a general consensus that either you use the 175/185 gr bullets or one of the new 155s. Probably 90% of 308s are set up for one of those two bullet classes. Both will reach 1000 plus and more but require substantially different throats in particular and twists (1-11 vs 1-13) according to most. Now there are certain reamers that will allow use of most bullets with trade offs at one end or the other and seem to work well. You have 3 different new 155s and they all vary in throat requirements and a longer throat (for 175/185 plus) will give you a lot of jump when using the 155s in that throat. Call Dave Kiff at Pacific Tool and Gauge and discuss reamers with him once you decide what the guns purpose is as he has a couple very good specialty and overall use 308 reamers he recommends. Buy your own and keep it for rebarrelling later. Better plan on a 20 MOA base too also as the 175/185 at 2650 will normally take 38 MOA to get to 1000 and the 155s will be 2-3 MOA less. Highly recommend the standard Lapua 308 brass or their brand new Lapua 308 palma brass that is just coming out. Varget, 4064 and RL 15 seem to be the go to powders with CCI BR2, WLR primers. BH [/QUOTE]
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.308 Project -seeking advice-
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