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Rifles, Reloading, Optics, Equipment
Reloading
Flattened Primers...
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<blockquote data-quote="MudRunner2005" data-source="post: 832263" data-attributes="member: 12995"><p>How does one go about measuring chamber pressure? I have always wondered that...All these guys know how much kpsi their loads produce, but I guess I have no idea how they measure that stuff.</p><p></p><p>I was reading on another thread, and a guy was having the sticky bolt issue with a 300 WM, sounded alot like mine, but he fixed his very quickly and simply, just by backing off the lands a couple thou. He said the bullet on the lands was causing some funky excess pressure spikes and causing his bolt to stick. He said he backed them off a couple thousandths, had his chamber polished, and now he has no issues at all. I guess I'll try his fix to see if it doesn't fix it first. Then I might have to get my chamber polished by my smith. Since it keeps leaving rough drag marks about 1/8" above the belt, even on brass on its second load...Which shouldn't be happening. Obviously I need to have my smith scope the bore anyway. Just want to make sure the throats still in great shape. Should be, since I should only be about 1/2 way theough my barrel's lifespan.</p><p></p><p>Found out the new (to me) 700 .338 WinMag won't hit the broad side of a barn. Cold-bore, shoots great. Second shot, close. Third shot, God's knows if it's gonna shoot high, low, left, or right, or any combo of those...</p><p></p><p>Looks like a good candidate for another 7STW...Being it's a Magnum LA receiver. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite8" alt=":D" title="Big Grin :D" loading="lazy" data-shortname=":D" /></p><p></p><p>OR, I'm gonna make it a lightweight .257 Wby Mag for whitetail hunting. Haven't decided...</p></blockquote><p></p>
[QUOTE="MudRunner2005, post: 832263, member: 12995"] How does one go about measuring chamber pressure? I have always wondered that...All these guys know how much kpsi their loads produce, but I guess I have no idea how they measure that stuff. I was reading on another thread, and a guy was having the sticky bolt issue with a 300 WM, sounded alot like mine, but he fixed his very quickly and simply, just by backing off the lands a couple thou. He said the bullet on the lands was causing some funky excess pressure spikes and causing his bolt to stick. He said he backed them off a couple thousandths, had his chamber polished, and now he has no issues at all. I guess I'll try his fix to see if it doesn't fix it first. Then I might have to get my chamber polished by my smith. Since it keeps leaving rough drag marks about 1/8" above the belt, even on brass on its second load...Which shouldn't be happening. Obviously I need to have my smith scope the bore anyway. Just want to make sure the throats still in great shape. Should be, since I should only be about 1/2 way theough my barrel's lifespan. Found out the new (to me) 700 .338 WinMag won't hit the broad side of a barn. Cold-bore, shoots great. Second shot, close. Third shot, God's knows if it's gonna shoot high, low, left, or right, or any combo of those... Looks like a good candidate for another 7STW...Being it's a Magnum LA receiver. :D OR, I'm gonna make it a lightweight .257 Wby Mag for whitetail hunting. Haven't decided... [/QUOTE]
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