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Rifles, Reloading, Optics, Equipment
Reloading
Question about velocity
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<blockquote data-quote="fireworks" data-source="post: 940967" data-attributes="member: 70656"><p>I forgot to mention, my chronograph is a cheap green fold open box called the chrony, made by " chrony inc". $100.00 Candaian deal. A buddy of mine told me he used to have one and says they are 100-130 Fps high so if he's right, im only about 2850. Trouble is, I can only get 7828 ssc to play nice with these things so I have my powder. 56.5 is actually .5 light of max charge but I still get a sticky bolt every 3rd or 4th shots. No sign of trouble on the brass or primer though. Given my experience with different pyrotechnic powders ( i actually am a licensed pyrotechnitian) certain powders give a better result with some expansion room over a compressed charge. But as a realoader Im pretty new to it and kinda got caught up in the more is better theory. My thought is can I back off .5, get at least as much velocity via expantion room in the brass if not a little more, and not get the occatsionall stiff bolt after firing. Im thinking this way because .050 off with a bullet this long is pretty deep in the case. Probably pushing the capacity. If I go to 57 gr. My velocity actually drops and i can dump sooty residue out of the spent brass. IE; not completely burnt.</p></blockquote><p></p>
[QUOTE="fireworks, post: 940967, member: 70656"] I forgot to mention, my chronograph is a cheap green fold open box called the chrony, made by " chrony inc". $100.00 Candaian deal. A buddy of mine told me he used to have one and says they are 100-130 Fps high so if he's right, im only about 2850. Trouble is, I can only get 7828 ssc to play nice with these things so I have my powder. 56.5 is actually .5 light of max charge but I still get a sticky bolt every 3rd or 4th shots. No sign of trouble on the brass or primer though. Given my experience with different pyrotechnic powders ( i actually am a licensed pyrotechnitian) certain powders give a better result with some expansion room over a compressed charge. But as a realoader Im pretty new to it and kinda got caught up in the more is better theory. My thought is can I back off .5, get at least as much velocity via expantion room in the brass if not a little more, and not get the occatsionall stiff bolt after firing. Im thinking this way because .050 off with a bullet this long is pretty deep in the case. Probably pushing the capacity. If I go to 57 gr. My velocity actually drops and i can dump sooty residue out of the spent brass. IE; not completely burnt. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Question about velocity
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