Re: your choice of range bags
EOD bag
Cheap and effective. Cut off the zipper pulls and replace with 550 cord, add various molle pouches and it doubles for rifle or pistol use. Holds four Bore-Stores with pistols (more with some smaller pistols) including vacuum packed first aid kits and other stuff in the internal front pocket.
Can hold six boxes or more of rifle ammo plus a Triad databook setup with the rear "M4 magazine" pockets full of 50rd boxes of 22LR.
Dummy cord in a waterproof match case with extra foam earplugs and a Merit Aperture (damn these old eyes) along with a Surefire spares carrier and all I gotta carry is targets.
Even with four pistols there's room for a pair of Pentax 8x32 binocs. Added some molle hardware, fab'ed some straps with ITW h/w, and a Kowa spotting scope with small tripod can easily be strapped to the top of the rifle bag.
With molle pouches on the front you can carry parts, batteries, tools, cleaning stuff, flashlight, multitool, magazines, etc. without any trouble.
I put together one for pistols and one for rifles. Installed some siamese clips on the ladder side of the rifle bag for use with a homemade belt to keep it from flopping around when the Kowa scope is attached. The belt is easily removed, rolled up, and stored in the bag taking up little room as is the shoulder strap when storing them at home in the closet.
FWIW, Pete