Originally Posted by Makintrax73


That's a great question. I wish I knew what to expect in the cold. I know Herco is a slower burning powder and lower pressure loads and slow powders can be an issue in the cold. Unfortunately I'm a bit stuck with what powder I have available. According to this http://www.armbrust.acf2.org/primersubs.htm the Fio primers are middle of the road on the "hotness" scale......whether that will be enough to overcome any cold sensitivity IDK.

I was concerned a bit with the wide extreme spreads at lower charges, so that doesn't bode well. Perhaps a freezer test with a few loads over the magnetospeed are in order before hunting season. If I can manage a test run I'll post results. I only have 100 of these primed hulls and I hate to waste many not knowing about supply.

I only found steel and bismuth load manuals on the Precision Reloading website, so AFAIK they do not publish tested lead loads.


BTW Dukxdog I've enjoyed your reports and great pictures from your hunting camp you've posted on the forums over the years!!!


I picked up a keg of Herco at a recent gun show. I have SG16 wads, etc so can duplicate your load then put in the freezer to find out.

***Thanks for the mention of my pheasant hunting house. I love it out there in South Dakota as do the guys who come to hunt.

Gun Owners of America & NRA Life Member
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"There are a hundred things that can happen at long range and only one of them is good"