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
A perk of majoring in wildlife biology in college is the plethora of hunting knowledge that you collect throughout your course load. One of the most important factors in whether an area can hold large quantities of animals or produce large antlers is forage.
Most universities, state schools and even community colleges offer basic botany courses and plant ID courses. Although it might not be feasable for the average middle age hunter to pay tuition and go back to college to learn hunting...