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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
338 RUM problems
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<blockquote data-quote="D.Camilleri" data-source="post: 182930" data-attributes="member: 2567"><p>Of the loads I shot yesterday, only one load strung out, it was the sierra 250 game king bt. Both groups of nosler partitions shot actual groups, just not very tight, 2" to 3". I tried a load with 200 grain hornady's that grouped around 12" and it wasn't even close to being a hot load, only 3070fps. Today I will seat my bullets back to 3.580 and only shoot the nosler's. I have tried 3 different scopes and am on my second set of bases and rings on this gun. First set of bases and rings were dual dovetail leuopold because without the muzzle brake I kept shearing the ears off of the rear windage mount. With the dual dove tails on, it required moving the windage adjustment quite a bit off of center in the scope. After lengthly discussions with the owner of Sightron, he wanted me to use windage bases and zero the scope as close as possible to keep the cross hairs in the center. </p><p></p><p>As far as the action being true, my gunsmith is old school and very profficient. I forgot to mention that this barrel was turned to a #5 contour with an 11 degree crown. Right now I am super cleaning the barrel to make sure there is no copper fouling and I will shoot it again today.</p><p></p><p>What really frustrates me is that my original factory barrel shot great until the defects showed up. I recently had this same gunsmith install a take off 300RUM barrel on my old 338 win action and it shoots 1/2 moa all day and isn't picky at all.</p><p></p><p>I am really starting to think about a different barrel, maybe a Lilja ss.</p></blockquote><p></p>
[QUOTE="D.Camilleri, post: 182930, member: 2567"] Of the loads I shot yesterday, only one load strung out, it was the sierra 250 game king bt. Both groups of nosler partitions shot actual groups, just not very tight, 2" to 3". I tried a load with 200 grain hornady's that grouped around 12" and it wasn't even close to being a hot load, only 3070fps. Today I will seat my bullets back to 3.580 and only shoot the nosler's. I have tried 3 different scopes and am on my second set of bases and rings on this gun. First set of bases and rings were dual dovetail leuopold because without the muzzle brake I kept shearing the ears off of the rear windage mount. With the dual dove tails on, it required moving the windage adjustment quite a bit off of center in the scope. After lengthly discussions with the owner of Sightron, he wanted me to use windage bases and zero the scope as close as possible to keep the cross hairs in the center. As far as the action being true, my gunsmith is old school and very profficient. I forgot to mention that this barrel was turned to a #5 contour with an 11 degree crown. Right now I am super cleaning the barrel to make sure there is no copper fouling and I will shoot it again today. What really frustrates me is that my original factory barrel shot great until the defects showed up. I recently had this same gunsmith install a take off 300RUM barrel on my old 338 win action and it shoots 1/2 moa all day and isn't picky at all. I am really starting to think about a different barrel, maybe a Lilja ss. [/QUOTE]
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Rifles, Bullets, Barrels & Ballistics
338 RUM problems
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