Still a few, but not many.
The Swift was at one time very popular with varmint hunters as the ultimate 22 long range death on groundhogs and the like, but the .22-250 Remington nearly edged it into oblivion. There were a few reasons.
First, the 22-250 is nearly the ballistic equivalent, but in a short action cartridge, so you don't need a M98 Mauser action to get there.
Second, the earlier barrels would 'burn out' fairly quickly. Steels have come a ways since then, but I think the Swift barrel will still erode more quickly than a 22-250 barrel. Somebody may correct me on this.
Third - the very popular 22-250 was officially adopted by Remington as a "factory cartridge" and non-reloaders found out very quickly that at most ranges, the minimal difference in velocity didn't matter. There is much more gap between, for example, the .223 and 22-250 than there is between 22-250 and the Swift. This spelled commercial success.
I think new barrels in Swift are more durable than the earlier ones.
One thing to consider in 22-250 versus Swift; Remington rifles in 22-250 had, at least last time I bought one, a 1:16 twist, and Swift barrels may be faster twist (or not). If you want to stablize the heavier bullets, like 63 grains, you will need a faster twist than the Remington 1:16, so you'll need to factor this in.