In order to get accurate figures on load software regarding velocity and energy, how important is it to get accurate muzzle velocities? How accurate are the book figures, which just go on powder type/weight and bullet type and weight?
Would i find large differences between book figures and actual figures if i used a chrono? Im no where near the stage where i am worrying about velocities and bullet drop yet as i havent sorted my .308 loads out yet.
On that note, if im going to buy some good quality brass for my .308, what would you go for?
Some of you have read my thread regarding my PRVI saga and may recall that i have replaced the non expanding bullets with hornady SST 150gn. I re used the powder which was in the PRVI ammo, and just did an average, ie 1640gn of powder divided by 40 rounds, give 41gn of powder per round. These are shooting OK, but i would like to play around with them. If i were to load the rounds with more than 41gn of the powder, is there a danger? Or is it if i load with less than 41gn when it becomes more dangerous?
Im sure a lot of you are cringing right now thinking about this numpty (me) and what im doing. Im just trying to do some load development without wasting the PRVI components. By doing this, am i wasting my time?