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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Boss setting inquiry, 150s in a .300 win mag model 70 supergrade. Anyone done this?
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<blockquote data-quote="Short Round" data-source="post: 2000440" data-attributes="member: 20795"><p>I have a great shooting Winchester Model 70 supergrade stainless synthetic. I have it at the original OEM setting for 180 grain bullets. With Nosler 180 grain BT it shoots 1/2" groups at 100 y. </p><p></p><p>I have 400 150 grain Hornady GMX bullets I would like to try out but there is no recommended starting point for that weight.</p><p></p><p>All I can do is look at the othe calibers like .308 and see how much apart the settings are. </p><p></p><p>My best guess is around 8.</p><p></p><p>Anyone have experience or a starting point based, possible start on formulas for barrel timing? I am guessing Browning/Winchester had some modeling methods before field tests. </p><p></p><p>Yes I know the only sure way is putting rounds down range but I sure would like to get a jump.</p><p></p><p>No worries in rushing to the opener, this is like the third rifle in the rotation, not counting woods walking guns like Dad's Marlin 336 or my 6.8 build.</p></blockquote><p></p>
[QUOTE="Short Round, post: 2000440, member: 20795"] I have a great shooting Winchester Model 70 supergrade stainless synthetic. I have it at the original OEM setting for 180 grain bullets. With Nosler 180 grain BT it shoots 1/2” groups at 100 y. I have 400 150 grain Hornady GMX bullets I would like to try out but there is no recommended starting point for that weight. All I can do is look at the othe calibers like .308 and see how much apart the settings are. My best guess is around 8. Anyone have experience or a starting point based, possible start on formulas for barrel timing? I am guessing Browning/Winchester had some modeling methods before field tests. Yes I know the only sure way is putting rounds down range but I sure would like to get a jump. No worries in rushing to the opener, this is like the third rifle in the rotation, not counting woods walking guns like Dad’s Marlin 336 or my 6.8 build. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Boss setting inquiry, 150s in a .300 win mag model 70 supergrade. Anyone done this?
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