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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Short barrel magnum velocity?
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<blockquote data-quote="Long Time Long Ranger" data-source="post: 473804" data-attributes="member: 505"><p>Squeakyhunter, I love the 338's and have worked with them since the 70's. When I had my range I tested 338's in barrel lengths from 24-34 inches. The larger calibers gain very little in velocity as the barrel length increases. With the 338's you can gain more per inch with the big 338-378 wby and similar size cases using extremely slow powders like H-870. But still not very much. Cases smaller like the lapua and ultramag cases gain very little per inch of barrel. Back in the 90's when I was testing variations of the Lapua and the 338-300 RUM I always averaged less than 100 fps from 26-31 inch barrels. That is when I realized a shorter stiffer barrel was better for me in these cartridges than a long one for hunting purposes. If you have a horse or a four wheeler to get your gun there then go long and heavy. If you have to walk like I do then go short. Both kill just as well. As I get older I realize carrying all that extra weight for a few fps just isn't worth it. What are a couple more clicks at long range anyway.</p></blockquote><p></p>
[QUOTE="Long Time Long Ranger, post: 473804, member: 505"] Squeakyhunter, I love the 338's and have worked with them since the 70's. When I had my range I tested 338's in barrel lengths from 24-34 inches. The larger calibers gain very little in velocity as the barrel length increases. With the 338's you can gain more per inch with the big 338-378 wby and similar size cases using extremely slow powders like H-870. But still not very much. Cases smaller like the lapua and ultramag cases gain very little per inch of barrel. Back in the 90's when I was testing variations of the Lapua and the 338-300 RUM I always averaged less than 100 fps from 26-31 inch barrels. That is when I realized a shorter stiffer barrel was better for me in these cartridges than a long one for hunting purposes. If you have a horse or a four wheeler to get your gun there then go long and heavy. If you have to walk like I do then go short. Both kill just as well. As I get older I realize carrying all that extra weight for a few fps just isn't worth it. What are a couple more clicks at long range anyway. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Short barrel magnum velocity?
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