Even some expensive range bags look like diaper bags IMO. I found a stout alligator covered suitcase about the size of a manual portable typewriter case - to use as a pistol case. In it I placed a row of hard foam Pistol Rack, a piece of foam for the grip end, & foam in the lid. I may be able to mount a small scope to it eventually.. I also use a large canvas forest-camo tote bag (made in India) bought on Ebay @ $9. It, can carry ammo, rifle rest, or pistols in rugs. I'd recommend stout military surplus Bags - over pricey range bags.
I've even been keeping my eyes open at thrift stores - for a fat Golf Gag on a 2 wheel carrier for my rifles. @ 78 they wear me out carrying between Car & Firing Line. Since a Lovely Assistant isn't likely.