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Rifles, Reloading, Optics, Equipment
Reloading
Question about a load development method ....
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<blockquote data-quote="Mike Matteson" data-source="post: 3087622" data-attributes="member: 101791"><p>Depending on case sizes. If the case is a mag size, then .5gr increase until hit chamber pressure signs. In smaller cases only .025 gr increases. You do need to learn to watch and read your cases or how your rifle is acting. It tell you that you getting into high pressures. Do some or a lot of reading on reading pressure signs. I work with a chronograph to read what going on at the same time. If you are going to use MLRP then reduce you load by about 5%. I generally don't use Mag Primers, but my case max out at about 75grs. Above that yes MLRP or shorter barrels. </p><p>Hard lift bolts, ejector marks on the case base is telling you are to hot. I stop at flatten primers. No ejector marks. Lot of people don't seem to worry about creator primers, because of firing pin bolt face opening. I don and stop there and back off a .5gr or so. Several of my reloads are 5+ grains about reloading manual max loads. </p><p>Powders are the other thing. Some powders change greatly with temp changes. This can change your chamber pressure greatly. I have attached a temp chart on some powder which has increase as the temp changests.</p><p>There no luck, just stay safe.</p></blockquote><p></p>
[QUOTE="Mike Matteson, post: 3087622, member: 101791"] Depending on case sizes. If the case is a mag size, then .5gr increase until hit chamber pressure signs. In smaller cases only .025 gr increases. You do need to learn to watch and read your cases or how your rifle is acting. It tell you that you getting into high pressures. Do some or a lot of reading on reading pressure signs. I work with a chronograph to read what going on at the same time. If you are going to use MLRP then reduce you load by about 5%. I generally don't use Mag Primers, but my case max out at about 75grs. Above that yes MLRP or shorter barrels. Hard lift bolts, ejector marks on the case base is telling you are to hot. I stop at flatten primers. No ejector marks. Lot of people don't seem to worry about creator primers, because of firing pin bolt face opening. I don and stop there and back off a .5gr or so. Several of my reloads are 5+ grains about reloading manual max loads. Powders are the other thing. Some powders change greatly with temp changes. This can change your chamber pressure greatly. I have attached a temp chart on some powder which has increase as the temp changests. There no luck, just stay safe. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Question about a load development method ....
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