Being fairly new to the area this is still helpful as i dont know all the places to shop. Been to beckwiths a few times. And done ok with ammo there until last weekend there supply was thin. Bass pro is easy for me right up the road from the house have lucked out on a few things just walking in but thats rare now days. I often stop other places when traveling around the state for work also
Keeping in mind that EVERY gun store is hammered now and not knowing what you are interested in here are a few places in the greater Gainesville/Ocala area you might check out if you should happen to be in their respective areas.
Newberry has Pawn Pro, Picketts Weaponry, and Archangel Armory all within about three blocks of each other on the main drag. Always worth a look see.
Ocala has Ocala Armory that I've mentioned, but I'd also check out Jerry's Pawn Shop, and especially CORE Rifle Systems (up on c.r. 326, they build airboats as well). There are others in the area, but some may be gone by now.
You probably already know the ones in Gainesville, but I'll mention M&C Army Surplus on 13th st just north of the university and Gainesville Pawn up on north 34th St. I occasionally have luck at both places. There's a shop out on Tower Road, but I can't bring their name to mind. Oaks Pawn on south 34th St doesn't usually have much, but we've sometimes had luck there. A buddy recently bought a Mossberg pump there at a really good price.
Further out the list starts getting really long so I'll only mention a couple I have dealt with recently. If you're in the Mt. Dora/Leesburg area then A.W. Peterson's is the place to be. They've been there decades, have some nice historical stuff on display, and always have something worth looking at.
In the Citrus county area HNR Gunworks in Inverness has nice gunsmith services and had a fair selection of ammo the last time we were in there. Wyoming Guns in Homosassa is good as it Patriot Sporting Goods in Citrus Springs.
There's a shop in Branford northwest of Gainesville named Flying D that had some nice stuff the one time we stopped in there. I rarely get up that way any more, but mean to go back if things ever get back to something approaching "normal" again.
Every once in a great while a buddy and I will pick a direction and go on a multi-county road trip stopping at every gun store we happen to come across. Never know what we'll come across but we always have a good time.