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Rifles, Reloading, Optics, Equipment
Reloading
Measure this and measure that.
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<blockquote data-quote="brian b" data-source="post: 68024" data-attributes="member: 2797"><p>4ked Horn,</p><p>after reading your initial post I measured 100 sierra 300gr MK's (338 of course) 25 from 4 different segregated bearing surface lenghts and every one measured exactly the same .3380 . the ones with the hi side GG was telling you about were still .3380 but one side had a slightly longer bearing surface than the other side not a larger diameter. One point I will totally agree with GG on is that it is a waste of time doing bullet bearing surface comparing on a 1000 yard gun ,but on an Ultra Long Range gun bearing surface length makes a huge difference on your vertical stringing period. as far as meplat uniforming I cant really say that I am totally sold on this ,but with that said I do believe that sorting meplat length is beneficial and the ones that are a little too long in the meplat can be trimmed slightly to conform with the rest. (on a test me and GG did I trimmed the meplats on some 300grMK's so that they were perfectly square, at 2000yds they landed 20 feet lower than the untrimmed meplats although much more uniform meplat trimming can be seriously overdone and changes B.C. more than I ever thought) if you are just shooting to 1000 dont do this either but if you are trying to shoot a Chuck at 2300yds do anything you can.</p><p>B</p></blockquote><p></p>
[QUOTE="brian b, post: 68024, member: 2797"] 4ked Horn, after reading your initial post I measured 100 sierra 300gr MK's (338 of course) 25 from 4 different segregated bearing surface lenghts and every one measured exactly the same .3380 . the ones with the hi side GG was telling you about were still .3380 but one side had a slightly longer bearing surface than the other side not a larger diameter. One point I will totally agree with GG on is that it is a waste of time doing bullet bearing surface comparing on a 1000 yard gun ,but on an Ultra Long Range gun bearing surface length makes a huge difference on your vertical stringing period. as far as meplat uniforming I cant really say that I am totally sold on this ,but with that said I do believe that sorting meplat length is beneficial and the ones that are a little too long in the meplat can be trimmed slightly to conform with the rest. (on a test me and GG did I trimmed the meplats on some 300grMK's so that they were perfectly square, at 2000yds they landed 20 feet lower than the untrimmed meplats although much more uniform meplat trimming can be seriously overdone and changes B.C. more than I ever thought) if you are just shooting to 1000 dont do this either but if you are trying to shoot a Chuck at 2300yds do anything you can. B [/QUOTE]
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Reloading
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