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Old 07-17-2011, 08:40   #91
robert91922
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Join Date: Aug 2009
Location: Slovenia, Europe
Posts: 429
Vihtavuori N105 is relatively slow burning in class of handgun powders but I wouldn't use LP Magnum primers with it in summer. If you will anyway, drop down starting load for at least 10% and carefully observe for overpressure signs.

And it burns quite better in summer, I measured 50 - 80 fps higher speeds (depending on load and bullet weight) on warm days although ammo wasn't exposed to direct sunlight or left in car for hours. Too bad I didn't write down all those data.

Stay safe and take care. And don't forget to use good ballistic glasses and kevlar/spectra gloves. It's much easier &cheaper to buy a new gun than new fingers.
I am planning to chrono some of my 10mm pet loads this summer just to compare with winter numbers, will post it here.
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Last edited by robert91922; 07-17-2011 at 13:06..
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