I've gone through 3 range bags, and could have saved a lot of money if I bought the Midway large range bag the first time. Tons of room, high quality, lots of pockets, often on sale for $39. Get one.
It looks exactly like the older Wilson Combat version and at half the price. If the pockets on the back are the same, you can easily store a couple of boxes of ammo, spare parts, etc.
Oh and if you are using single stack magazines, I am able to store 2 per pocket inside of the magazine pockets. That is, if they have not changed the dimensions.
I just received a couple from ebay from seller usaholsterworld , he sells the Pro-Tech brand, no leathers. They feel & fit great, looks like quality stitching, etc.