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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
.260 pressure problems.
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<blockquote data-quote="johnnyk" data-source="post: 1669122" data-attributes="member: 307"><p>Very well could be the different powder lot, which can be hotter/faster (i.e. higher pressure) at the same weight or slower, requiring more to reach same level of pressure as before. It's a pain to have to start load development over each time you get a different lot of powder but it's the safest way to go.</p><p>Another thing to look for is a carbon ring just ahead of the chamber. These build up and cause all kinds of problems, mostly related to pressure. These (carbon build up) cause havoc on a known good load.</p><p>I got it once on my 6.5-284 Norma and used Sea Foam. It took a bit of elbow grease but I got rid of it. Now I use it at every cleaning and that seems to keep the problem at bay. Maybe others on here have another method for removing it.</p></blockquote><p></p>
[QUOTE="johnnyk, post: 1669122, member: 307"] Very well could be the different powder lot, which can be hotter/faster (i.e. higher pressure) at the same weight or slower, requiring more to reach same level of pressure as before. It's a pain to have to start load development over each time you get a different lot of powder but it's the safest way to go. Another thing to look for is a carbon ring just ahead of the chamber. These build up and cause all kinds of problems, mostly related to pressure. These (carbon build up) cause havoc on a known good load. I got it once on my 6.5-284 Norma and used Sea Foam. It took a bit of elbow grease but I got rid of it. Now I use it at every cleaning and that seems to keep the problem at bay. Maybe others on here have another method for removing it. [/QUOTE]
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.260 pressure problems.
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