well I am gonna hunt real cold weather my hunt is a 3 day hunt I shoudl be fairly save leaving loose 777 in my gun in the shed outside, its gonna be -1 to -10 canadian temps...so I dont think moisture is an issue???I mean hopefully I will use a load everyday but incase I dont??

y not5,
At those temperatures you won't have a moisture problem, but you will have a condensation problem if you bring your ML indoors where it'll be a lot warmer. Leaving it in the shed, uncapped should work just fine.
I hunted last weekend and the temperature was in the lower teens. I left my ML loaded and uncapped in my SUVover nightand I had no problem with the Triple 7, when hammer time came the next morning. I also used a fresh 209 primer and saved the previous days primer for a later day at the range.
Good luck and make sureyou post pictures for us.

thanks for all the help from everyone here I hope I have alot of pics to post, you guys helped get through alot, I am not completly happy with my sidekick where as my dad and grandfather baought there blued versions at the same time I baought my stainless and get good groups, so after the hunt I am probably gonna return it and get an omega..