repeatability is the key here......if you can get that load to shoot well several times in both hot and cold, successfully, Id say you are done. I cant tell you how many times I thought I had the perfect load worked up (one that shot great1 or2 times) and then I couldnt ever get it to shoot good again. Its funny, some guns I have found that "sweet" load on my first trip to the range and then some other guns I have been testing for a year to no avail. But thats half the fun. Good luck.