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Offline Sourdough

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Range Report
« on: March 08, 2005, 12:14:39 PM »
Working up a new load for my 30-06 using 165gr Nosler Partitions.  Using Reloader-22, new Winchester cases, and WLR primers.
 
59grs starting load shot a 3/4" group, at 100 yards.  Increased 1/2gr increments, till I got to the Max load of 63grs for the Nosler manual.  Got no high pressure signs at all.  The primers were flattened but no more than with factory ammo, still had a space between the primer and the rim of the primer pocket.  The firing pin dimple was not cratered, in fact it did not look any different than the 59gr primer.  
 
But here is where the difference lye.  At 59 thru 61.5grs my groups were 3/4".  At 62grs the group opened to 2-1/2".  At 62.5, 4".  And at 63 they scattered to 8" apart.  I'm going to settle at 61grs and start increasing my distance, and see how things hold up at 300 and 400 yards.
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Offline Paul5388

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« Reply #1 on: March 08, 2005, 12:51:44 PM »
Out of curiosity, have you noticed any difference in POI in cold weather when you use RL-22?  We have had a discussion on another forum about temperature sensitivity on RL-22 compared to H4831 or IMR 4350.  

Your location makes a good testing ground for determining a noticable difference.  However, you would think a powder produced in Sweden wouldn't lose sensitivity in cold weather.
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Offline Sourdough

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« Reply #2 on: March 08, 2005, 01:25:30 PM »
This is the first time I have used RL-22.  I can not say anything about temp changing the point of impact.  But I will be watching for it.  Right now the temp is just above freezing around 40 deg.  I'll keep tabs of the temp when I shoot and see if POI changes.  That is something I will be watching very carefully since we have such a dramatic change in temp here.  I shoot from minus 30 to 90 above.
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What Is A Veteran?
A 'Veteran' -- whether active duty, discharged, retired, or reserve -- is someone who, at one point in his life, wrote a blank check made payable to 'The United States of America,' for an amount of 'up to, and including his life.' That is honor, and there are way too many people in this country today who no longer understand that fact.

Offline Paul5388

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« Reply #3 on: March 08, 2005, 07:01:05 PM »
It all has to do with the nitroglycerine content of the powder.  Keeping nitro cold is one of the ways they can transport it with more safety, since it's less sensitive then.

I just looked at the MSDS for RL-22 and it notes it being double based, which means it has from 4%-40% nitroglycerine in it.
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