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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Snug Bolt Lift?
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<blockquote data-quote="James Jones" data-source="post: 113362" data-attributes="member: 8843"><p>typicaly a stiff boltis a little ways down the list of pressure you will usualy see extractor marks then flat primmers then the sticky bolt and in a well cut tight chamber you may not get a sticky bolt till the pressures are realy high.</p><p>Most folks assume that just because they are getting sticky bolt lift that their pressure is up but in actuality it could be from the brass flowing forward just enough to get into a tight spot in the neck or it could be from a poorly cut chamber.</p><p>First check the case head and see if their is a slight shiny spot that would be where the extractor makes contact and if their is a mark then check to see if the primers are differant shape than when you seated them(flattened out) and if you have this then you probably have sticky bolt from pressure if not its from another reason.</p><p></p><p>Typicaly velocity is a good indication of pressure , if you running higher than most posted data then your probably over pressure but some guns shoot fast. 3000fps isin't unheard of in a 300Win mag with a 24-26 inch barrel.</p></blockquote><p></p>
[QUOTE="James Jones, post: 113362, member: 8843"] typicaly a stiff boltis a little ways down the list of pressure you will usualy see extractor marks then flat primmers then the sticky bolt and in a well cut tight chamber you may not get a sticky bolt till the pressures are realy high. Most folks assume that just because they are getting sticky bolt lift that their pressure is up but in actuality it could be from the brass flowing forward just enough to get into a tight spot in the neck or it could be from a poorly cut chamber. First check the case head and see if their is a slight shiny spot that would be where the extractor makes contact and if their is a mark then check to see if the primers are differant shape than when you seated them(flattened out) and if you have this then you probably have sticky bolt from pressure if not its from another reason. Typicaly velocity is a good indication of pressure , if you running higher than most posted data then your probably over pressure but some guns shoot fast. 3000fps isin't unheard of in a 300Win mag with a 24-26 inch barrel. [/QUOTE]
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Rifles, Bullets, Barrels & Ballistics
Snug Bolt Lift?
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