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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
.243 Superformance non-performance
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<blockquote data-quote="Lefty7mmstw" data-source="post: 699048" data-attributes="member: 48043"><p>I've seen up to 300 fps difference in a load from one rifle to another. The next load will be similar between the same dang rifles. That's why they say every rifle is a law unto itself. Barrel length, throat, barrel diameter all have bearing as to velocity, as do smoothness of bore, ambient air temp., rifle temp., how stiffly you hold your rifle, distance from chronograph to muzzle, and chronograph accuracy. I'm sure I forgot a few other variables too.</p><p> </p><p>In short, 100 fps difference or so + - don't worry. Much more than that, and unless you have a really short barrel, you probably want to look at another load.</p></blockquote><p></p>
[QUOTE="Lefty7mmstw, post: 699048, member: 48043"] I've seen up to 300 fps difference in a load from one rifle to another. The next load will be similar between the same dang rifles. That's why they say every rifle is a law unto itself. Barrel length, throat, barrel diameter all have bearing as to velocity, as do smoothness of bore, ambient air temp., rifle temp., how stiffly you hold your rifle, distance from chronograph to muzzle, and chronograph accuracy. I'm sure I forgot a few other variables too. In short, 100 fps difference or so + - don't worry. Much more than that, and unless you have a really short barrel, you probably want to look at another load. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
.243 Superformance non-performance
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