It is with great pleasure I am now stocking Draft Club BBs. I've been using these almost exclusively since they were first released and am yet to find a better BB for low-power bolt-action skirmishing.
For bolt-action play I recommend 0.28s and 0.3g, the extra weight of which helps to keep them on track through wind, weather and foliage.
For assault rifles 0.25 or 0.28g BBs are excellent, balancing consistency in outdoor conditions with affordability at higher rates fo fire.
For SMG use consider 0.2 or 0.25g, weight of fire matters more and these will keep you fed just nicely.
Bottles are of 3000 BBs.