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Rifles, Reloading, Optics, Equipment
Reloading
Reloading to replicate another caliber?
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<blockquote data-quote="Mike Matteson" data-source="post: 3031132" data-attributes="member: 101791"><p>Under 60grs of powder, only go up .2grs of powder, Cases over 60 cases you can go up .5grs at a time. Besure to get them in order, and not mix them up. Set up and index as to which load is where and start at the low powder load. A great many years ago and no guidance on 70gr case I moved up .1 at a time. I was going into unexplored area for me at that time. I also learned about temp sensitive powder. That's where I almost got into trouble. Never cross that bridge again. If I use temp sensitive powders, work up a load in the summer time when the powder is at it's max in velocity change. If it's cold it's less chamber pressure, and the velocity is down. There only two powder that I use the are temp sensitive. W760 and IMR 4064. Both were developed in hot weather. W760 change as much as 1.42fps per degree of temp, and IMR4064 change about 0.45fps change per degree. The balance of my powder are H powders 4350, 4831 & sc, 4895, 1000, and Retumbo</p></blockquote><p></p>
[QUOTE="Mike Matteson, post: 3031132, member: 101791"] Under 60grs of powder, only go up .2grs of powder, Cases over 60 cases you can go up .5grs at a time. Besure to get them in order, and not mix them up. Set up and index as to which load is where and start at the low powder load. A great many years ago and no guidance on 70gr case I moved up .1 at a time. I was going into unexplored area for me at that time. I also learned about temp sensitive powder. That's where I almost got into trouble. Never cross that bridge again. If I use temp sensitive powders, work up a load in the summer time when the powder is at it's max in velocity change. If it's cold it's less chamber pressure, and the velocity is down. There only two powder that I use the are temp sensitive. W760 and IMR 4064. Both were developed in hot weather. W760 change as much as 1.42fps per degree of temp, and IMR4064 change about 0.45fps change per degree. The balance of my powder are H powders 4350, 4831 & sc, 4895, 1000, and Retumbo [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Reloading to replicate another caliber?
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