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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Need advice on testing during load development
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<blockquote data-quote="Greyfox" data-source="post: 1108664" data-attributes="member: 10291"><p>Having been a shooter of the 270WSM, I had a few thoughts about your post. Also, most of my load development and practice takes place in summer temperatures no too different than yours described down there in Atlanta. My first thought is that your are paying way too much in time and energy trying to conserve your barrel. The single best way to extend your barrel would be to choose a good high BC140-150 gr bullet driven to 3100-3200FPS. The trade off in flat trajectory, especially out to 300 yards with a hunting rifle would not be materially different. 3" high, 300 yard zero n my rifle had me in the the vitals of coyotes from 100 yards to 350 yards. I would also test the POI of your rifle hot, cold clean, dirty. You might be surprised and find out that POI doesn't shift. Mine doesn't. At the very least you will find out what the effect is, and then figure out what to do. Finally, getting good terminal ballistics on game with a 3500FPS light bullet on game between 100 and 500 yards can be tricky. I'm at 1000 rounds through my 270 WSM and groups are still .25-.5MOA. Just my experiences and opinion.</p></blockquote><p></p>
[QUOTE="Greyfox, post: 1108664, member: 10291"] Having been a shooter of the 270WSM, I had a few thoughts about your post. Also, most of my load development and practice takes place in summer temperatures no too different than yours described down there in Atlanta. My first thought is that your are paying way too much in time and energy trying to conserve your barrel. The single best way to extend your barrel would be to choose a good high BC140-150 gr bullet driven to 3100-3200FPS. The trade off in flat trajectory, especially out to 300 yards with a hunting rifle would not be materially different. 3" high, 300 yard zero n my rifle had me in the the vitals of coyotes from 100 yards to 350 yards. I would also test the POI of your rifle hot, cold clean, dirty. You might be surprised and find out that POI doesn't shift. Mine doesn't. At the very least you will find out what the effect is, and then figure out what to do. Finally, getting good terminal ballistics on game with a 3500FPS light bullet on game between 100 and 500 yards can be tricky. I'm at 1000 rounds through my 270 WSM and groups are still .25-.5MOA. Just my experiences and opinion. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Need advice on testing during load development
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