Easily fits 4 pistols (2 in each pistol pocket, one inside the removable insert, the other closer towards the main compartment), though the pistol compartments can get a little snug once you toss mags into there as well. I'd say that the main compartment is roughly the size of a 50 cal can. I hang my ears off one of the handles. Solid bag. Usually keep cleaning kits, lulas, 3-4 bricks of 22lr, couple hundred rounds of handgun, and some loaded 30 rounders in there. Even with all the weight, the bottom of the bag doesn't sag at all (has an insert in the bottom for rigidity). The design's pretty nice b/c with the inside having a removable liner, it gives some space that targets and paperwork are out of the way and secure.
Only thing I'd say I'd want changed is the shoulder strap. The shoulder strap is plenty padded and comfy, but having some offset clipping options would be nice just due to the bag being so wide.
I was a bit hesitant at first to spend that much money on a range bag and bought it with a gift card. Don't regret it one bit and would buy again. Some of the best money I've spent on soft goods.