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Rifles, Reloading, Optics, Equipment
Reloading
New member question- reloader 22 temp sensitive
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<blockquote data-quote="65WSM" data-source="post: 814143" data-attributes="member: 9551"><p>As a math teacher, I will ask "did you level your chronograph?" both times you shot over it? I will bet you had a variable distance between your chronograph sensors. Unless it is parallel to the path of the bullet it will read high because the bullet will pass between the sensors quicker than if it is parallel.</p><p></p><p>I spoke to the Swedish plant Engineer at Bufors at their booth at the NRA show in 1979. We talked about exactly temperature sensitivity in Reloader 22. He said they have very cold temperatures in Sweden to test powder and primer combinations. He thinks that the Federal 215 is the best choice we have (RWS also makes a primer he had faith in). </p><p></p><p>I have posted before that I have visited at length with a Physics Professor, Dennis Skailand, who was in uniform and tested small arms and ammunition for Aberdeen Proving Ground, spending one Winter in Nome and a Summer in Panama. Great fun. The Army chose Reloader 15 for its Rangers an d Special Forces sniper ammunition because it was the least temperature sensitive. </p><p></p><p>My information is old and I would be interested in the performance of some of the more recent powders like VithaVuori, Hodgdon 100V, SuperPerformance 4000MR, MagPro, Retumbo, H-1000, etc</p></blockquote><p></p>
[QUOTE="65WSM, post: 814143, member: 9551"] As a math teacher, I will ask "did you level your chronograph?" both times you shot over it? I will bet you had a variable distance between your chronograph sensors. Unless it is parallel to the path of the bullet it will read high because the bullet will pass between the sensors quicker than if it is parallel. I spoke to the Swedish plant Engineer at Bufors at their booth at the NRA show in 1979. We talked about exactly temperature sensitivity in Reloader 22. He said they have very cold temperatures in Sweden to test powder and primer combinations. He thinks that the Federal 215 is the best choice we have (RWS also makes a primer he had faith in). I have posted before that I have visited at length with a Physics Professor, Dennis Skailand, who was in uniform and tested small arms and ammunition for Aberdeen Proving Ground, spending one Winter in Nome and a Summer in Panama. Great fun. The Army chose Reloader 15 for its Rangers an d Special Forces sniper ammunition because it was the least temperature sensitive. My information is old and I would be interested in the performance of some of the more recent powders like VithaVuori, Hodgdon 100V, SuperPerformance 4000MR, MagPro, Retumbo, H-1000, etc [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
New member question- reloader 22 temp sensitive
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