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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Come on out - It's safe now
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<blockquote data-quote="royinidaho" data-source="post: 78374" data-attributes="member: 2011"><p><strong>Re: Come on out - It\'s safe now</strong></p><p></p><p>[ QUOTE ]</p><p>If one was to take a 4x8 piece of plywood(i believe like kirby does) and start at 100yards and get your zero(aiming point would be the top of the plywood) and move the plywood to 200 still maitaining aiming point of the top of the plywood and fire a group and then circling or marking the group and then move it to 300 and so on while still maintaining aiming point of the top of the plywood. </p><p> NOTE--- One would not adjust the elevation turret---</p><p></p><p></p><p>[/ QUOTE ]</p><p></p><p>Matt27, that's exactly what I did last fall. Took all most all day. Using a tape measure marked out to 500 yds in 100yd increments. Used cardboard box of sufficient height (I hoped based on factory bc). Was across a dry lake bed.</p><p></p><p>Let me tell ya, that was a lot of walking, the lake was dry, but when you broke through the crust you could sink up to your knee. Thus no driving.</p><p></p><p>Time of day was a factor as too much time was taken. After I was done I made some SWAGs (scientific as I was holding a calculator in my hand when I made 'em but mostly WAGs).</p><p></p><p>After much more shooting an playing I came up with a drop chart. After all that work, my first shot # 650 was spot on.</p><p></p><p>Why, not this. Set up a regular paper target target at say 100 or 200 yds. Align it so that the 4X8 large target is lined up properly at say 500 yds. Line up the near target exactly at the top edge of the far target (if that can be done) then shoot.</p><p></p><p>Will the "paper" mess up the bullet profile?</p><p>If I'm successful w/getting accurate drop measurements using this method and develop a usuable drop chart out to 800 yds does it make any difference what the velocity or bc is? (Just thinking very basically) </p><p></p><p>Am shooting .338 252gr bullet w/o published bc. They're so purdy I kinda hate to shoot 'em. Have 'em all lined up on the shelf in the shop in itty bitty grass skirts so they wiggle when I close the door hard. /ubbthreads/images/graemlins/wink.gif</p></blockquote><p></p>
[QUOTE="royinidaho, post: 78374, member: 2011"] [b]Re: Come on out - It\'s safe now[/b] [ QUOTE ] If one was to take a 4x8 piece of plywood(i believe like kirby does) and start at 100yards and get your zero(aiming point would be the top of the plywood) and move the plywood to 200 still maitaining aiming point of the top of the plywood and fire a group and then circling or marking the group and then move it to 300 and so on while still maintaining aiming point of the top of the plywood. NOTE--- One would not adjust the elevation turret--- [/ QUOTE ] Matt27, that's exactly what I did last fall. Took all most all day. Using a tape measure marked out to 500 yds in 100yd increments. Used cardboard box of sufficient height (I hoped based on factory bc). Was across a dry lake bed. Let me tell ya, that was a lot of walking, the lake was dry, but when you broke through the crust you could sink up to your knee. Thus no driving. Time of day was a factor as too much time was taken. After I was done I made some SWAGs (scientific as I was holding a calculator in my hand when I made 'em but mostly WAGs). After much more shooting an playing I came up with a drop chart. After all that work, my first shot # 650 was spot on. Why, not this. Set up a regular paper target target at say 100 or 200 yds. Align it so that the 4X8 large target is lined up properly at say 500 yds. Line up the near target exactly at the top edge of the far target (if that can be done) then shoot. Will the "paper" mess up the bullet profile? If I'm successful w/getting accurate drop measurements using this method and develop a usuable drop chart out to 800 yds does it make any difference what the velocity or bc is? (Just thinking very basically) Am shooting .338 252gr bullet w/o published bc. They're so purdy I kinda hate to shoot 'em. Have 'em all lined up on the shelf in the shop in itty bitty grass skirts so they wiggle when I close the door hard. [img]/ubbthreads/images/graemlins/wink.gif[/img] [/QUOTE]
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