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Rifles, Reloading, Optics, Equipment
Reloading
How do you lower S.D.?
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<blockquote data-quote="Boss Hoss" data-source="post: 188646" data-attributes="member: 5060"><p>This is one reason I no longer shoot factory rifles because there are so many variables that you have no control over. Short of writing a white paper here you might also consider how long the round is sitting in the chamber before you pull the trigger. Always keep your ammunition at a constant temperature when working up loads. As a matter of course the chambered round is fired within 2 to 3 seconds of closing the bolt. On factory rifles and using regular rests this can be a challenge but the shorter time in the chamber (obviously after you have fired a few rounds) the less heat is transferred to the case and powder and that will impact ignition temperature which in turn will cause pressure differentiations which in turn translates into different velocities. </p><p></p><p>Have verified this in my own testing after a friend of mine who build my sticks and is also a HOF shooter told me about this little trick a few years ago.. I shoot 1K and even a small increase in velocity will cause dispersion and that is not good thing.</p><p></p><p>Good Luck!!</p></blockquote><p></p>
[QUOTE="Boss Hoss, post: 188646, member: 5060"] This is one reason I no longer shoot factory rifles because there are so many variables that you have no control over. Short of writing a white paper here you might also consider how long the round is sitting in the chamber before you pull the trigger. Always keep your ammunition at a constant temperature when working up loads. As a matter of course the chambered round is fired within 2 to 3 seconds of closing the bolt. On factory rifles and using regular rests this can be a challenge but the shorter time in the chamber (obviously after you have fired a few rounds) the less heat is transferred to the case and powder and that will impact ignition temperature which in turn will cause pressure differentiations which in turn translates into different velocities. Have verified this in my own testing after a friend of mine who build my sticks and is also a HOF shooter told me about this little trick a few years ago.. I shoot 1K and even a small increase in velocity will cause dispersion and that is not good thing. Good Luck!! [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
How do you lower S.D.?
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