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Long Range Hunting & Shooting
Reloading- What pressure signs do you stop at?
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<blockquote data-quote="Mr. Magoo" data-source="post: 2769383" data-attributes="member: 124360"><p>Using velocity increase per grain of powder can be misleading too- Hitting a really wide node will do that.</p><p></p><p>I use an 'all the above' method for reading pressure.Velocities in conjunction with primer flattening / marks on the base/bolt lift is what I go by. Seems heavy bolt lift is the hard limit not to go further for most folks, me included.</p><p></p><p>I look at pressure this way- I'm not going to be blowing up a bolt gun until WAY past mild pressure signs, so I dont have a heart attack when I do see signs. If I have a cartridge where brass is plentiful and easy to come by (and dont care about brass life)(aka 5.56) and want to run it hot (primer flattening some), and the gun likes it there, I will.</p><p></p><p>Others, where I want long brass life because the prep is time consuming or brass spendy, I'll go till I see signs and back off till they're gone if I find a node there.</p><p></p><p>I had a 22-250 that I couldn't get to shoot as well as I epected it to near pressure. So because I was using 4064sc I switched to pistol primers, backed it way off and started going back up. Found a node with velocities near the top that was putting them in the .2s consistently but the primer was flattening pretty good. Left it there, never had a lick of trouble with pierced primers or pockets loosening too quick. It was actually a soft shooting load. I figured the time/ pressure curve was more spread out. I guess cci pistol primers are softer.</p></blockquote><p></p>
[QUOTE="Mr. Magoo, post: 2769383, member: 124360"] Using velocity increase per grain of powder can be misleading too- Hitting a really wide node will do that. I use an 'all the above' method for reading pressure.Velocities in conjunction with primer flattening / marks on the base/bolt lift is what I go by. Seems heavy bolt lift is the hard limit not to go further for most folks, me included. I look at pressure this way- I'm not going to be blowing up a bolt gun until WAY past mild pressure signs, so I dont have a heart attack when I do see signs. If I have a cartridge where brass is plentiful and easy to come by (and dont care about brass life)(aka 5.56) and want to run it hot (primer flattening some), and the gun likes it there, I will. Others, where I want long brass life because the prep is time consuming or brass spendy, I'll go till I see signs and back off till they're gone if I find a node there. I had a 22-250 that I couldn't get to shoot as well as I epected it to near pressure. So because I was using 4064sc I switched to pistol primers, backed it way off and started going back up. Found a node with velocities near the top that was putting them in the .2s consistently but the primer was flattening pretty good. Left it there, never had a lick of trouble with pierced primers or pockets loosening too quick. It was actually a soft shooting load. I figured the time/ pressure curve was more spread out. I guess cci pistol primers are softer. [/QUOTE]
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Reloading- What pressure signs do you stop at?
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