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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
I’m always busy at the wrong time…for SCIENCE!!!😡🤣. Anyone ever shoot at these temps and get chrono numbers?
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<blockquote data-quote="Mike Matteson" data-source="post: 2713256" data-attributes="member: 101791"><p>I write about double base powders all the time. They are heat sensitive, and some greater that others. Varget, H4350, H4831, and H1000 are some of the lease sensitive powders. I learn over 20 years ago on powders. I have petty much stop using double base powders. I hunt in -20 to 110 weather. </p><p>Hopefully I will get a chance to use some other single base powder this summer and try them in the winters here in Montana. </p><p>This all come about with a load I had develop about 22 or so years ago. I was getting 3400fps with IMR 4350 in the winter in S. Cal. or I call it Mexico-North. Temp was in the 50 to 60 dr. Excellence grouping, and great velocity for that rifle. Set the rifle aside and moved onto others. When back to that rifle in the summer. First round down the tube I below a primer out of the case. Took a bit to get the action open too. I was an unhappy camper. Figure out what was going. Never use IMR 4350 or 4831 again, and some of the reloader powders have the same problem. I don't need that problem. If you are going to use double base powders. Do some load development in different times of the year. Especially in long range shooting. It doesn't take much variance to move where your bullet hits at different ranges. 50fps change can make a 14" different @ 1000yds. </p><p>So my rule of thumb is: I don't use double based powder if at all possible. It doesn't take much to read up on how a powder is made up.</p></blockquote><p></p>
[QUOTE="Mike Matteson, post: 2713256, member: 101791"] I write about double base powders all the time. They are heat sensitive, and some greater that others. Varget, H4350, H4831, and H1000 are some of the lease sensitive powders. I learn over 20 years ago on powders. I have petty much stop using double base powders. I hunt in -20 to 110 weather. Hopefully I will get a chance to use some other single base powder this summer and try them in the winters here in Montana. This all come about with a load I had develop about 22 or so years ago. I was getting 3400fps with IMR 4350 in the winter in S. Cal. or I call it Mexico-North. Temp was in the 50 to 60 dr. Excellence grouping, and great velocity for that rifle. Set the rifle aside and moved onto others. When back to that rifle in the summer. First round down the tube I below a primer out of the case. Took a bit to get the action open too. I was an unhappy camper. Figure out what was going. Never use IMR 4350 or 4831 again, and some of the reloader powders have the same problem. I don't need that problem. If you are going to use double base powders. Do some load development in different times of the year. Especially in long range shooting. It doesn't take much variance to move where your bullet hits at different ranges. 50fps change can make a 14" different @ 1000yds. So my rule of thumb is: I don't use double based powder if at all possible. It doesn't take much to read up on how a powder is made up. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
I’m always busy at the wrong time…for SCIENCE!!!😡🤣. Anyone ever shoot at these temps and get chrono numbers?
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