Went to the range today and fired 100 rounds of .45 cal. I was shooting my SR1911LW with 5.7grns. of W-231 and using Berry 230grn RN. At 30 feet I managed to keep my rounds (except for 4) within a 4" circle, which for me is pretty good. I shot 85 rounds @30 feet and then tried 15 rounds at 10 feet. At 10 feet I kept the 15 rounds inside of a silver dollar which made me happy. Of course I was aiming and we all know that should we need to use our weapons at 10 feet, we would not take the time to aim. I did have 1 round that did NOT fire. Upon getting home, I dismantled the round and it had powder and the primer had a good strike. I am using Winchester large pistol primers and that is the first time a Winchester primer has failed to ignite. I have used them for years. I do think that 5.3 grains of W-231 is the optimum powder for .45 cal instead of using 5.7 grains. I have targets at home I have saved and compared them and the best ones are with the lower powder usage. My COAL consistently runs @ 1.250 which varies at times approximately .003-.005. All said, any day at the range is a good day although it was warm down there today. Our temps are running 105-108 degrees and they said it would be back up to 111 degrees by the upcoming week-end.