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
Jim Zumbo, Craig Boddington, Ron Spomer and Wayne Van Zwoll are all solid contributers to the modern hunting literature. Through their gifts (both hunting and writing) they make us better hunters. Whether it is letting us learn from their mistakes or by teaching us new techniques,they help us harvest more game. But I suggest looking to the oldies, the fathers of the outdoor writing craft, to learn tricks that you might have not used.
I chose to shoot the 270 winchester because I grew up...