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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Powder and Temp?
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<blockquote data-quote="dfanonymous" data-source="post: 1303545" data-attributes="member: 97050"><p>yes ammo temp as well as barrel/chamber temp will affect velocity. Also if you are reloading, keep in mind that pressures will also increase as well.</p><p>and yes some powders are more resistant to temperature sensitivity than others. Varget for instance is pretty stable for warmer weather, its also a slower burning powering...so keep that in mind as well..</p><p>I never max load personally to just to be sure, so i can safely use my load data year round...takes awhile to get load data throughout different seasons..but i use hornady 75gr bthp with 24.7 gr of varget...year round...it works for that rifle both in accuracy and pressure. that just leaves me with truing mv through the seasons, and as bore conditions change, which hasnt been much in my .223</p></blockquote><p></p>
[QUOTE="dfanonymous, post: 1303545, member: 97050"] yes ammo temp as well as barrel/chamber temp will affect velocity. Also if you are reloading, keep in mind that pressures will also increase as well. and yes some powders are more resistant to temperature sensitivity than others. Varget for instance is pretty stable for warmer weather, its also a slower burning powering...so keep that in mind as well.. I never max load personally to just to be sure, so i can safely use my load data year round...takes awhile to get load data throughout different seasons..but i use hornady 75gr bthp with 24.7 gr of varget...year round...it works for that rifle both in accuracy and pressure. that just leaves me with truing mv through the seasons, and as bore conditions change, which hasnt been much in my .223 [/QUOTE]
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Powder and Temp?
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