While a bit off topic, yes, I’ve been telling a friend of mine that for a long time. Luckily a shell casing can be resized and reused many times and all types of gun powder can be purchased easily. The bullet itself can be made at home from melting lead (if need be).
The recent price of ammunition has shown many others feel that way as well. Just about all online retailers are on backorder and most gun stores are sold out. Fortunately many gun types and styles use the same ammunition so it may be a bit difficult to ban a particular size of ammunition. But on the other hand there is no constitutional amendment saying the government can’t ban ammunition. After all you can’t buy LSD at Wal-Mart, well not inside the store.