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Rifles, Reloading, Optics, Equipment
Reloading
Pressure "spikes" on Big Magnum Cartridges....
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<blockquote data-quote="Ridge Runner" data-source="post: 123662" data-attributes="member: 951"><p><strong>Re: Pressure \"spikes\" on Big Magnum Cartridges....</strong></p><p></p><p>The barrel heating up will warm the ammo enough to do this, I've saw the same thing in my 7mm AM, leaving the third round in the chamber an extra 2 min. will boost my MV over 200 fps. but I shoot WC872 and its pretty heat sensative, on an 80 degree sunny day, a typical 3 shot string goes like this first shot is fine, light bolt lift, effortless extraction, shot #2, slightly heavy lift, slightly sticky extraction, mildly cratered primer, third shot, !@$%*&amp; heavy bolt lift, and very sticky, primer may or may not pierce. 60 degrees and below there isn't a problem.</p><p>JS</p></blockquote><p></p>
[QUOTE="Ridge Runner, post: 123662, member: 951"] [b]Re: Pressure \"spikes\" on Big Magnum Cartridges....[/b] The barrel heating up will warm the ammo enough to do this, I've saw the same thing in my 7mm AM, leaving the third round in the chamber an extra 2 min. will boost my MV over 200 fps. but I shoot WC872 and its pretty heat sensative, on an 80 degree sunny day, a typical 3 shot string goes like this first shot is fine, light bolt lift, effortless extraction, shot #2, slightly heavy lift, slightly sticky extraction, mildly cratered primer, third shot, !@$%*& heavy bolt lift, and very sticky, primer may or may not pierce. 60 degrees and below there isn't a problem. JS [/QUOTE]
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Reloading
Pressure "spikes" on Big Magnum Cartridges....
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