Loading to the lands to late?
I just got my reloader last week and after lots of practice with powder measuring I decided to load up alot of test rounds. I loaded up fifty rounds of BL-C2 5 shots each of 39 grain Blitzking and 40 grain Hornady vmax. With staring loads from the sugested starting to the max. And I also did the same with H4895. So now I have 100 rounds loaded of test ammo. After all this work I read the other day about loading to the lands. And I ask the guy at work who has been helping me alot and he said that it helps alot, buthe said to be safe and not touch the lands cause of a pressure spike. My question is can I shoot all these to determine the best load and then load to the lands only to improve the best one? Or will I have to shoot and reload all and retest with loading longer? Sorry so long and thanks!