Vmax, I tried my loads at the range yesterday and ended up only with one good shooter...IMR4831 at Nosler's max load of 44.5 grains. It didnt surprise me about this powder though, I have had tremendious luck with this powder out of my own 243 getting clover leafs at 100 yards with 90 nosler balistic tips with the same max load and with a hot load of the same bullet in 70 grains the group is sooo tight you barely can tell its a three shot group. I also know a another shooter with a 243 diameter wildcat pushing the evelope way hotter than me and hes shooing tighter than a drum as well. From what I've seen, the faster you push this powder in a 243 diameter barrel the better it shoots! The test rifle was my buddies 243 coyote with a scope I could barely see out of... a simmons 4.5x14 ATV that he is now replacing with a vx2 4x12 today. That ATV is the biggest P.O.S. It was hazy and blury but it got the job done. The coyote hasn't had any type of bedding work done to it and the trigger has been lightened a bit. I didnt have a trigger scale but I'd have to say around 3-3.5 lbs. I worked my way up in loads to make sure there were no signs of casing pressure...I didnt have any. I dont know what type of rifle your using but I suggest the same. I'm no pro, just someone that started reloading my myself about 4 years ago and do not want to be responsible for any out come so BE CAREFUL! I trimmed the cases to minimum length of 2.035" and seated the bullets at SAMI maximun length of 2.710" and used Federal 210 primers. Here are the powders I used and the group results at 100 yards...GOOD LUCK AND SAFE SHOOTING!
POWDER-GRAINS-100 YARD GROUP
H380-42G-1.2"
RL22-42G-1.3"
RL22-43.5G-2.0"
RL22-44G-1.3"
IMR4831-43G-1.2"
IMR4831-43.5G-1.1"
IMR4831-44G-1.25"
IMR4831-44.5-.4"
I have some of the noslers recorded velocities for some of the loads listed above. The H380 load was 3232fps, IMR4831 at 44.5 grains was 3240fps, and the RL22 at 42 grains I already stated in the above post at 3000fps.