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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Cold weather Chronograph results.
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<blockquote data-quote="Cold Trigger Finger" data-source="post: 734069" data-attributes="member: 56732"><p>Yes, the 3rd round was in the chamber for close to 1 minute. It took me a short time to check the chrony to make sure there was no error. Plus as it was in the bottom of the mag I think it hadn't got quite as cold as the 2 above it. </p><p> Some may think the 100 fps velocity drop is significant. And in some ways it is, but lots of other powders will loose 200-400 and more fps of velocity drop and will blow so much unburnt powder out the muzzle that a Chronograph will always show an error unless it is put ay 25-30 yards from the muzzle.</p><p> RL 15 is pretty bad in the cold (-20 and colder)</p><p>I've had hang fires with BLC2. </p><p> For me as a hunter, 2900 fps is still very useful velocity.</p><p> My goal is to record the real velocity drop so that I can figure the poi drop and wind drift. At the different temps. </p><p></p><p> And a guy told me that some of the custom barrel makers won't ship stainless barrels up here because they say they will shatter in the cold.</p></blockquote><p></p>
[QUOTE="Cold Trigger Finger, post: 734069, member: 56732"] Yes, the 3rd round was in the chamber for close to 1 minute. It took me a short time to check the chrony to make sure there was no error. Plus as it was in the bottom of the mag I think it hadn't got quite as cold as the 2 above it. Some may think the 100 fps velocity drop is significant. And in some ways it is, but lots of other powders will loose 200-400 and more fps of velocity drop and will blow so much unburnt powder out the muzzle that a Chronograph will always show an error unless it is put ay 25-30 yards from the muzzle. RL 15 is pretty bad in the cold (-20 and colder) I've had hang fires with BLC2. For me as a hunter, 2900 fps is still very useful velocity. My goal is to record the real velocity drop so that I can figure the poi drop and wind drift. At the different temps. And a guy told me that some of the custom barrel makers won't ship stainless barrels up here because they say they will shatter in the cold. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Cold weather Chronograph results.
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