Need advice

[30plusretlaw]

I think, I'm confused. I'm thinking, that If I reload for the BA, I can use the same rounds on the AR. So it will depend on the seating of the bullet? I have to read a lot. I really enjoy the BA, so it will be primarily for that rifle but when the range is at a 100 yards, I might bring the AR also. The BSO range use the same lanes for 100, 200, 300 yards. They divided by weekend. The 300 yards, looking at the schedule, is only 4 times a year :-( . BTW Just learn something today. By looking at the firing pin strike, I can tell the ones that were fired by the BA vs the ones from the AR, even the manufacturer. The PPU and the Federal primers strikes, look different. Does seating of the bullet, dictate, how much powder I can put on the casing, for more velocity? Last question for today, Where do you guys buy the powder and primers? online or local? I see tons of powders, how do I know which one to buy, same for the primers? Thanks again.