What has been the availability of .38 SPL and .357 Magnum factory ammo availability been during the pandemic, particularly as compared to other hand gun calibers?

I've only been looking at .38 SPL and .357 Magnum for the past three weeks or so, and it's really hard to find. When I started buying guns in August 2021, I noticed that .45 ACP was out of stock at the LGS, which guided my decision to start with 9mm. I'm noticing now that big box LGS (Sportsman's and Big5) have .45 ACP, but rarely .38 SPL or .357 Magnum

I'm in California, so on-line ammo orders have to go through my FFL, which is a pain in terms of logistics. I also understand that on-line ammo dealers charge a hazardous materials fee.

Once I pass California's one-gun-a-month purchase club in about 2.5 weeks, I plan to buy a revolver or a lever action rifle in .357 Magnum. However, I'm concerned about being able to resupply ammo. I'm not in a place to set up ammo reloading, so for the foreseeable future, I'm limited to factory ammo.