I shoot mostly .30 carbine and .223 for an AR no real load development needed but I carrly my ammo to the range in a pair of old WW! grenade vests that i had webbing sown to to form an H harness and a bag sown to the belt between the two vests in back for a range bag.East vest has 11 pockets and each pocket will hold 4 10rnd stripper clips of .223,5 10rnd stripper clips of .30 carbine or 3 15rnd carbine mags.I slip into the harness at the range and leaves my hands free for carrying rifles spotting scope etc etc