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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
shooting chrony
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<blockquote data-quote="milanuk" data-source="post: 25306" data-attributes="member: 376"><p>I'd have to say I think that if you are taking sufficient care w/ your handloading, the problem is probably the Chrony.</p><p></p><p>I had a Remington 40XB-KS in .220 Swift, the first gun I really went all out and tested just about every powder/bullet/brass/primer I could find in it, using as meticulous care as I could. Settled on a handful of loads that seemed to be excellent performers on paper, regardless of what the chronograph said (Beta Master model). Kind of baffling how loads can be shooting bullets into little dime sized groups, w/ velocity spreads that should be throwing them off the paper. Probably picked up a few grey hairs trying to figure out what was wrong w/ my loads (trying to obtain E.S. under 40-50 *max*). Never got to shoot those loads on another chronograph, but when things started getting goofy, I decided it was probably the Chrony. I mean, when a load is pushing a 50gr bullet at around 3900-3950fps, as much as I'd like to believe it, even w/ a Swift, I don't think they are suddenly hopping up to 4500, then 5000 fps. Then on my .308 Win, the loads were clocking real consistently, then they were jumping from 2800fps (168gr SMK) to 4000, then 6000, then 8000 fps. </p><p></p><p>Hell, who needs a magnum? Just get a .308 Winchester and a Shooting Chrony <img src="http://images/icons/wink.gif" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>In my mind, the failing of the Chrony as far as accuracy is concerned is the distance btwn the screens. If you look at the info for the Oehler 35P at their website, the more accuracy you want/need, the further you have to put the screens, up to 6 or even 8 feet if you really want to get down to the gnat's ***, especially for high speed centerfire rounds. 1 foot, for the Chrony's just doesn't cut it. And all chronographs are going to have situations/conditions where there will be suspect readings. At least w/ the Oehler w/ a proof channel, it will let you know which shots are questionable, so you aren't basing your data calculations off of invalid data.</p><p></p><p>Guess what I'm going to be spending some of my tax return $$$ on?</p></blockquote><p></p>
[QUOTE="milanuk, post: 25306, member: 376"] I'd have to say I think that if you are taking sufficient care w/ your handloading, the problem is probably the Chrony. I had a Remington 40XB-KS in .220 Swift, the first gun I really went all out and tested just about every powder/bullet/brass/primer I could find in it, using as meticulous care as I could. Settled on a handful of loads that seemed to be excellent performers on paper, regardless of what the chronograph said (Beta Master model). Kind of baffling how loads can be shooting bullets into little dime sized groups, w/ velocity spreads that should be throwing them off the paper. Probably picked up a few grey hairs trying to figure out what was wrong w/ my loads (trying to obtain E.S. under 40-50 *max*). Never got to shoot those loads on another chronograph, but when things started getting goofy, I decided it was probably the Chrony. I mean, when a load is pushing a 50gr bullet at around 3900-3950fps, as much as I'd like to believe it, even w/ a Swift, I don't think they are suddenly hopping up to 4500, then 5000 fps. Then on my .308 Win, the loads were clocking real consistently, then they were jumping from 2800fps (168gr SMK) to 4000, then 6000, then 8000 fps. Hell, who needs a magnum? Just get a .308 Winchester and a Shooting Chrony [img]images/icons/wink.gif[/img] In my mind, the failing of the Chrony as far as accuracy is concerned is the distance btwn the screens. If you look at the info for the Oehler 35P at their website, the more accuracy you want/need, the further you have to put the screens, up to 6 or even 8 feet if you really want to get down to the gnat's ***, especially for high speed centerfire rounds. 1 foot, for the Chrony's just doesn't cut it. And all chronographs are going to have situations/conditions where there will be suspect readings. At least w/ the Oehler w/ a proof channel, it will let you know which shots are questionable, so you aren't basing your data calculations off of invalid data. Guess what I'm going to be spending some of my tax return $$$ on? [/QUOTE]
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