What have you noticed with your barrels. As the barrel gets more rounds through it have you notice an increase or decrease in your velocity? The barrel on my Edge seems to have slowed down a bit since it was brand new. A load that was going 2842fps is now going 2800fps. These were shot in similar temps so I can rule that out. H-1000 is suposed to be less temp sensitive anyways. Would shooting on a sunny day verse an overcast day make that big of a difference. I just talked to CED, and he made it sound like if you have enough light to get good readings then you should have good numbers. When I was working up a load for speed I never had speeds that were down in the 2800fps range once I got the powder charge past 91gr. My load Im using is 93gr H-1000, and a 300SMK.