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Rifles, Reloading, Optics, Equipment
Reloading
Pet load showing sudden pressure?!
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<blockquote data-quote="BobbyL" data-source="post: 422094" data-attributes="member: 14081"><p>I assume that you are checking the OAL of the brass and its not getting to long? Were the bullets in the lands? How often do you clean the barrel? Bumping and neck sizing usually dont cause problems like this it would have to be extreme but its possible something like that could be the problem. What about the lot of primers? What about the bullets? There can be a major difference in how long the bearing surface is and the thickness of the bullets form lot to lot no matter what bullets you shoot and they will cause these kinds of problems very very quickly. What does the firing pin strikes look like? Is the chamber clean? Sometimes not enough brass grip will cause this to happen as well. I always clean up my brass with 00 steel wool pads in my cordless drill so i have the same grip ever time. When the cases get hard this can happen as well.</p><p></p><p>I have went through at least 20 different lots of retumbo and given there was sometimes a .5 grain difference in the loads but never found any problems with it. Not saying that this is not the problem because it just happens but its rare for the H extreme powders to vary from lot to lot because they mix 3 lots at the same time so this doesnt happen. I have had more problems with 25 this way then any other powder. It can be sensitive when it comes to max load having .5 grain being to much.</p></blockquote><p></p>
[QUOTE="BobbyL, post: 422094, member: 14081"] I assume that you are checking the OAL of the brass and its not getting to long? Were the bullets in the lands? How often do you clean the barrel? Bumping and neck sizing usually dont cause problems like this it would have to be extreme but its possible something like that could be the problem. What about the lot of primers? What about the bullets? There can be a major difference in how long the bearing surface is and the thickness of the bullets form lot to lot no matter what bullets you shoot and they will cause these kinds of problems very very quickly. What does the firing pin strikes look like? Is the chamber clean? Sometimes not enough brass grip will cause this to happen as well. I always clean up my brass with 00 steel wool pads in my cordless drill so i have the same grip ever time. When the cases get hard this can happen as well. I have went through at least 20 different lots of retumbo and given there was sometimes a .5 grain difference in the loads but never found any problems with it. Not saying that this is not the problem because it just happens but its rare for the H extreme powders to vary from lot to lot because they mix 3 lots at the same time so this doesnt happen. I have had more problems with 25 this way then any other powder. It can be sensitive when it comes to max load having .5 grain being to much. [/QUOTE]
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Pet load showing sudden pressure?!
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