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Hunting
Long Range Hunting & Shooting
308 and Hammer Bullets
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<blockquote data-quote="MarkA" data-source="post: 1591502" data-attributes="member: 5220"><p>Magnum primer, Varget to start at about 47 grains. Seat bullet out to saami overall length at 2.80" and check speed. I would expect a 24" barrel to break 3,100 fps with a 130 grain Hammer bullet. Work charge up to that speed watching for pressure as normal load workup (shouldn't be any pressure issues) let the speed tell you when you are close.</p><p></p><p>Remember that burn rates go up as charge weights go up and get close to case fill. I usually like to see hammer bullets seated where boat tail meets bullet diameter flush with neck shoulder junction (only boat tail portion below neck!). See what gives you for overall length with this bullet as I have not shot it.</p><p></p><p>I'm using the 152 Hammer in 30-06 with H4350 but would tend to think case volume in the .308 be better suited for the 130 Sledge Hammer.</p><p></p><p>Steve may chime in if he has better starting point.</p></blockquote><p></p>
[QUOTE="MarkA, post: 1591502, member: 5220"] Magnum primer, Varget to start at about 47 grains. Seat bullet out to saami overall length at 2.80" and check speed. I would expect a 24" barrel to break 3,100 fps with a 130 grain Hammer bullet. Work charge up to that speed watching for pressure as normal load workup (shouldn't be any pressure issues) let the speed tell you when you are close. Remember that burn rates go up as charge weights go up and get close to case fill. I usually like to see hammer bullets seated where boat tail meets bullet diameter flush with neck shoulder junction (only boat tail portion below neck!). See what gives you for overall length with this bullet as I have not shot it. I'm using the 152 Hammer in 30-06 with H4350 but would tend to think case volume in the .308 be better suited for the 130 Sledge Hammer. Steve may chime in if he has better starting point. [/QUOTE]
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