The 721 is pretty close to a 700, the biggest difference I'm aware of is the extractor ring in the bolt face. Rather than having an extractor milled into the bolt face, the 721 has a ring of rolled/stamped metal that clips into the inside of the bolt face.
This ring is relatively weak compared to a 700 and occasionally breaks.
I thought all the original 721's came in blued steel.
the one i have was made in 1956 and it does have a stainless steel barrel i had a friend that is really into guns check it out he said it is stainless he said it is probably a rare one the letters on the barrel say it was made in 1956
When hunting whitetails there are many different languages being spoken afield that I key on when outdoors. All these little creatures living around whitetails have something to tell us if we are willing to listen.
My favorite tattletales of the outdoors are a handful of little birds that live in my state of Ohio. Maybe yours too. A tip for the upcoming season.
There are Blue Jays, Cardinals, Chickadees, Killdeer, and Sparrows that all have language...