I left a load of 3f 777 loaded for about two months in my Omegaand it shot 8 inches high when I arrived at a hog hunt. Just recently, I've left my PH loaded for close to a month with Shockey's Gold Sticks and killed a nice doe at 95 yards and the Nosler hit right where I put the hairs... this past summerI performed a little test with the JSG Sticks and my Omega. For one week I would alternate from outside to inside, from SC heat and humidity to air conditioning... when the week was out I shot the gun at 100 yards and it was off about 3 inches, which would equal a dead critter. All that being said, it's best to have a fresh load...