Hey guys I worked up a great Berger load for my 700 varmint 243 last December. I am shooting 43 grains of 4350 with 87 vld hunting bullets. I found my sweet spot to be right at the LANs, 2.277 to the ogive and I was shooting 3070 fps. I shot this load on 12-8-12 and had awesome results; I had 5 bullets loaded, all touching at 100 yds, and the last two touching at 300 yds. I went out to shoot this gun and load for the first time since December this morning. It didn't shoot worth a crap this time!? I didn't even measure it since it was so bad. My velocity was a little slower due to being colder out, 3030 fps, but I would have never expected it to go down hill that fast. Here are the wether specs for the time of shooting and picture for the first time in December: 60 degrees Barometric pressure 30 hg Humidity 84 http://i1097.photobucket.com/albums/g341/jca57jd/image_zpse5f600d8.jpg Here is the info for today: 43 degrees Barometric pressure 30.25 hg Humidity 46 http://i1097.photobucket.com/albums/g341/jca57jd/image_zpsf05b0d6c.jpg What is your opinions on what my problem might be? Thanks heads up thanks for any of your inputs!!