can anyone here post "custom" bullet data for :

**PPU M80 7.62×51/308 Win Ammunition 145gr FMJ BT**

so that I can spot where i was going wrong?

can anyone explain the different ballistic models? for example G1 or G7? the only real info i can find on the models is what kind of bullets the models are for. when pressed for explanation all i hear is each model is a bunch of mathematical voodoo. id would like more in depth analysis

can anyone link me a good ballistic coefficient calculator? i think i understand how it works but the calculators i have found are obviously crap. for example: http://gundata.org/ballistic-coefficient-calculator/ this one wont let you input the diameter correctly

also if you can tell me what kind of setups and gear you have that would be great. I am running an RPR in 308 with an atlas bipod and vortex razor gen 2 and a bubble level, there is a killflash coming in the mail. i have a bushnell conx rangefinder and a mildot master for ranging. what else should i get?

thanks for your help guys