I am glad i was able to help. As per the cold spells, well at 50 degrees you will notice a drop so yes, Gene_SC is right, but you got the avanti for that. wait... my qb78 shot 480 fps with a .22 and 35 degrees outside. If you need the extra 10 fps you can shoot the pumper... But with 30 feet available, any rifle will do. So go ahead, get all of them and join the party! call me next time you get time to come out here... we can take your kids to the range and I got some toys that you and your kids might want to try... But i am not responsible when your next christmas list starts to look like a page from Cobra Airguns inventory, pal... LOL