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Rifles, Reloading, Optics, Equipment
Reloading
Powder temperature sensitivity
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<blockquote data-quote="johnnyk" data-source="post: 333845" data-attributes="member: 307"><p>Hey Coach,</p><p> I use alot of different powders year round, with the exception of AA and Ramshot, and I notice a little difference in velocity, but not alot. I usually adjust my Ballistic Card according to the conditions I'll be hunting in.</p><p> For instances; if I'm hunting groundhogs with my .243 Win and a Hornady 75gn HP/IMR 4895 in 90-80 deg temps., first thing I do after I've found an accurate load is chrono that load at that temperature, and at the same time check my zero. For "whistlepigs" I like the zero to be approx. 3-3.5" high @ 100yds and dead on at 300yds. I make my card up and use that as long as the ammunition last, the conditions persist or the groundhogs wave a white flag <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" />.</p><p> After I print out that data, I cut only the necessary info out, write the load data on the back (i.e. cartridge/bullet/powder/primer/case/OAL/velocity/date) and the atmospheric data (i.e. wind/temp/humidity/barometric pressure), then I laminate it so it can easily be taken and replaced from behind the nylon cartridge carrier on my rifle stock. </p><p>Later, if I switch to the 95gn Ballistic Tip/Viht N560 in 60-50deg temps., I make a card for that only after I chrono the most accurate load.</p><p> This is not the preferred method for everyone, but it works great for me, it's quick and it's accurate. JohnnyK.</p></blockquote><p></p>
[QUOTE="johnnyk, post: 333845, member: 307"] Hey Coach, I use alot of different powders year round, with the exception of AA and Ramshot, and I notice a little difference in velocity, but not alot. I usually adjust my Ballistic Card according to the conditions I'll be hunting in. For instances; if I'm hunting groundhogs with my .243 Win and a Hornady 75gn HP/IMR 4895 in 90-80 deg temps., first thing I do after I've found an accurate load is chrono that load at that temperature, and at the same time check my zero. For "whistlepigs" I like the zero to be approx. 3-3.5" high @ 100yds and dead on at 300yds. I make my card up and use that as long as the ammunition last, the conditions persist or the groundhogs wave a white flag :). After I print out that data, I cut only the necessary info out, write the load data on the back (i.e. cartridge/bullet/powder/primer/case/OAL/velocity/date) and the atmospheric data (i.e. wind/temp/humidity/barometric pressure), then I laminate it so it can easily be taken and replaced from behind the nylon cartridge carrier on my rifle stock. Later, if I switch to the 95gn Ballistic Tip/Viht N560 in 60-50deg temps., I make a card for that only after I chrono the most accurate load. This is not the preferred method for everyone, but it works great for me, it's quick and it's accurate. JohnnyK. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Powder temperature sensitivity
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