I recently did two ladder tests on two different days with diffing weather conditions. Once I brought the data back to the "lab", I noticed that the groupings were about the same regardless of weather...no surprise there. I found that the most accurate group for my .243 shooting 100 gr Hornady Interlocks was 43.0 grs of IMR4350. Less than 2" group at 400 yards. It had a velocity ES of 30 fps or so. Reading some articles online, they suggest a much lower ES for long range shooting. I dove into my data some more and discovered that the 42.8 gr charge had an ES of less than 5 fps yet grouped 4" at 400 yards on both days. Any thoughts on what path I should take? It seems to me that consistently tight groups would be the ticket and just toss the velocity ES data.