I know it's a RCBS but Is it a rock chucker or was there something before that? it is an old Loader. It cycles fine, I've been thinking about getting it painted or cerakoted. Probably will swage on this since I'm getting a 650XL.
I got the same model in a trade last year,,,
works great for my .308 reloading.
Found another one recently but have been unable to free up the rust on it.