I just came across this and wanted to give a tip I use when removing/installing a barrel on a 60. To remove I have 2x2 about 2 foot long. On one end near the end I drill a hole barely larger than the diameter of the fattest part of the barrel. After removing the barrel pin I slide the 2x2 over the end of the barrel then grab the muzzle end of the barrel and slide the 2x2 down until it's against the receiver. While holding the barrel near the muzzle end with the receiver on the bottom and the 2x2 on top of it I set the opposite end of the 2x2 on my shop table. Put a towel or something on the floor to catch the receiver then hit the 2x2 near the barrel with a hammer a couple times and the receiver pops right off. To install I made a jig to keep everything straight while driving the barrel back on. I saw an example on rimfirecentral.
Use a wittled down popsicle stick in the rear dovetail sight to help keep the barrel straight. Use a plastic/rubber mallet to hit the muzzle end and drive the barrel in until it's flush with the receiver. This has worked for me multiple times.