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Rifles, Reloading, Optics, Equipment
Reloading
Pressure Signs?
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<blockquote data-quote="Bowfishn" data-source="post: 1310486" data-attributes="member: 56875"><p>Not really sure what happened with your loads but I checked QL against Alliants reload data for RL17 and the 30-06 loads for powder charge vs published velocities.</p><p></p><p>200 gr bullet was off by .7% 24" barrel</p><p>180 gr bullet was off by 2% 22" barrel</p><p>165 gr bullet was off by .5% 22" barrel</p><p></p><p>QL showed slower speed requiring the percent increase to equal Alliants.</p><p></p><p>I do not know if the 22" barrels were from same rifle or not.</p><p></p><p>I had to tweak my loads .4% when I switched lot numbers with rl26</p><p>new lot was slower than first lot I tried, I now have 5 lbs of same lot.</p><p></p><p>QL is a good means of comparing powders and bullets for a cartridge, but as with load manuals start low and work up. By using velocities obtained by shooting and comparing with predicted QL velocities you will know if you are approaching high pressures.</p><p>If I test a load and it is 100 fps faster than what is projected by QL or load manuals, is it because I have a magic barrel that causes bullets to gain velocity without pressure increase or is it because something is causing higher pressure and velocity, causing me to approach increases with extreme caution. </p><p>Just my 2 cents.</p><p>gun)</p></blockquote><p></p>
[QUOTE="Bowfishn, post: 1310486, member: 56875"] Not really sure what happened with your loads but I checked QL against Alliants reload data for RL17 and the 30-06 loads for powder charge vs published velocities. 200 gr bullet was off by .7% 24" barrel 180 gr bullet was off by 2% 22" barrel 165 gr bullet was off by .5% 22" barrel QL showed slower speed requiring the percent increase to equal Alliants. I do not know if the 22" barrels were from same rifle or not. I had to tweak my loads .4% when I switched lot numbers with rl26 new lot was slower than first lot I tried, I now have 5 lbs of same lot. QL is a good means of comparing powders and bullets for a cartridge, but as with load manuals start low and work up. By using velocities obtained by shooting and comparing with predicted QL velocities you will know if you are approaching high pressures. If I test a load and it is 100 fps faster than what is projected by QL or load manuals, is it because I have a magic barrel that causes bullets to gain velocity without pressure increase or is it because something is causing higher pressure and velocity, causing me to approach increases with extreme caution. Just my 2 cents. gun) [/QUOTE]
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Pressure Signs?
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