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Long Range Hunting & Shooting
270 WSM rebarreled to something more efficient?
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<blockquote data-quote="D in lv" data-source="post: 1689476" data-attributes="member: 109474"><p>I just went through the same exercise. One of my 270 wsm's needed rebarrelling. I hand load. I wanted to stay in the wsm line and was considering the 6.5 wsm, 7 wsm, 7x300wsm and 300 wsm. I finally went with the 7 wsm. It has a little larger case capacity than the other wsm's and there is head stamped brass available which helps me avoid bad screws ups.</p><p></p><p>I have always liked the 7s for long and short range deer and elk cartridges. They carry well hit hard and are fairly easy on shooters.</p><p></p><p>I did make sure of the availability of brass and dies before deciding on the barrel. I found loaded ammo and picked up one box for barrel break in.</p><p></p><p>I have about 50 rounds down the barrel and have found it easy to reload with lots of bullet options compared to the 270. My maximum loads are fast with no signs of pressure. I could probably push harder if needed. The barrel is a 24" bartelien #2 contour, with a 9.5 twist. I focused on bullets in the 160 - 170 gr range. The factory 150 grain barrel break in loads chronnied out at 3250 fps. As a note, I did not like the concentricity of factory loads, and it is not plentiful. I took 165 grain sierra game changers up over 3100 fps with rl 26, then backed down to a node at 3050 fps. I'm a couple grains below published Alliant powder maximum loads.</p><p></p><p>I have not gotten to the tune up stage yet, but preliminary accuracy is in the range of 0.6 - 0.8 moa.</p><p>Recoil is heavier than the 270wsm but manageable. </p><p>If I were doing it again I would make sure the lans were cut to accommodate the longest loaded round I could run through the short action magazine. The bullets set deep in the case, compressing slow powders and reducing case capacity. The 270 wsm with 140 bullets does not suffer this fate to the same extent. </p><p></p><p>Hope that helps, good luck.</p></blockquote><p></p>
[QUOTE="D in lv, post: 1689476, member: 109474"] I just went through the same exercise. One of my 270 wsm's needed rebarrelling. I hand load. I wanted to stay in the wsm line and was considering the 6.5 wsm, 7 wsm, 7x300wsm and 300 wsm. I finally went with the 7 wsm. It has a little larger case capacity than the other wsm's and there is head stamped brass available which helps me avoid bad screws ups. I have always liked the 7s for long and short range deer and elk cartridges. They carry well hit hard and are fairly easy on shooters. I did make sure of the availability of brass and dies before deciding on the barrel. I found loaded ammo and picked up one box for barrel break in. I have about 50 rounds down the barrel and have found it easy to reload with lots of bullet options compared to the 270. My maximum loads are fast with no signs of pressure. I could probably push harder if needed. The barrel is a 24" bartelien #2 contour, with a 9.5 twist. I focused on bullets in the 160 - 170 gr range. The factory 150 grain barrel break in loads chronnied out at 3250 fps. As a note, I did not like the concentricity of factory loads, and it is not plentiful. I took 165 grain sierra game changers up over 3100 fps with rl 26, then backed down to a node at 3050 fps. I'm a couple grains below published Alliant powder maximum loads. I have not gotten to the tune up stage yet, but preliminary accuracy is in the range of 0.6 - 0.8 moa. Recoil is heavier than the 270wsm but manageable. If I were doing it again I would make sure the lans were cut to accommodate the longest loaded round I could run through the short action magazine. The bullets set deep in the case, compressing slow powders and reducing case capacity. The 270 wsm with 140 bullets does not suffer this fate to the same extent. Hope that helps, good luck. [/QUOTE]
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270 WSM rebarreled to something more efficient?
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