weather here during spring hunt is usualy cold in the mornig and nice n warm after the sun pops out, (usualy too many clothes on to walk out than it took to walk in with lol. for the yardage you would be shooting i wouldnt wory about it. i wouldnt think there would be much to any difference. i like the 3 1/2 heavy loads in a #4 shot but for a longer shot i'll slip in a 3 1/2 hv #5. i think anything over 50 yards is a pull-n-pray shot anyways and im not much for unsure shots. i like the 30 to 40 but have dropped a few at 50 before that just wouldnt come those few more yards.