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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
18" 7mm SAUM twist rate
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<blockquote data-quote="HydroCarbon" data-source="post: 2082988" data-attributes="member: 32783"><p>I'm really wanting to do a short barreled 7saum. I'm not just sure what twist rate to go with, my plan is to shoot 162 - 175gr bullets. I've read a bunch of different threads on here, as well as, rokslide, accurate shooter, snipers hide and others. What I'm finding is that none of these really talk about short barrels. When I do a twist rate calculator, a 1-9 or 1-9.5 twist is the answer. I'm thinking a 1-8 will fit the bill. </p><p></p><p>Here's my thought process:</p><ul> <li data-xf-list-type="ul">18" barrel, minus 2.5 for the shank, leaves 15.5'' to get the bullet spinning<ul> <li data-xf-list-type="ul">1-9 twist: 1 and a little over 2/3rds of rotation in the barrel</li> <li data-xf-list-type="ul">1-8 twist: almost 2 full twists before leaving the barrel</li> </ul></li> </ul><p>Here's my plan:</p><ul> <li data-xf-list-type="ul">Tikka T3X action</li> <li data-xf-list-type="ul">Mesa Altitude stock</li> <li data-xf-list-type="ul">CarbonSix 18" Sendaro barrel</li> <li data-xf-list-type="ul">New Bottom metal </li> </ul><p>Am I right in this line of thinking, do I go 1-8 or what?</p><p>Thank you for your input!</p></blockquote><p></p>
[QUOTE="HydroCarbon, post: 2082988, member: 32783"] I'm really wanting to do a short barreled 7saum. I'm not just sure what twist rate to go with, my plan is to shoot 162 - 175gr bullets. I've read a bunch of different threads on here, as well as, rokslide, accurate shooter, snipers hide and others. What I'm finding is that none of these really talk about short barrels. When I do a twist rate calculator, a 1-9 or 1-9.5 twist is the answer. I'm thinking a 1-8 will fit the bill. Here's my thought process: [LIST] [*]18" barrel, minus 2.5 for the shank, leaves 15.5'' to get the bullet spinning [LIST] [*]1-9 twist: 1 and a little over 2/3rds of rotation in the barrel [*]1-8 twist: almost 2 full twists before leaving the barrel [/LIST] [/LIST] Here's my plan: [LIST] [*]Tikka T3X action [*]Mesa Altitude stock [*]CarbonSix 18" Sendaro barrel [*]New Bottom metal [/LIST] Am I right in this line of thinking, do I go 1-8 or what? Thank you for your input! [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
18" 7mm SAUM twist rate
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