id rather have a counter bored mosin then one with a worn muzzle that's more like a hotdog down a hallway its done to make the gun more accurate. rust happens same as worn parts their milsurps the ones who hae seen the most combat will be the most beat to hell and worn guns around
I have seen a lot of milsurp rifles and handguns in my day. Well into the triple digit thousands. When that stuff comes in to a wholesaler it has usually been purchased by LOTS. In some cases, they purchase it from government arsenal disposal sales or auctions or from people that have been to those sales to actually view what is being offered. To my knowledge, they don't get to pick and choose what the lots are made up of.
If the firearms are sold to them as "mixed condition" anything is possible from scrap metal and firewood to pristine in the wrap and arsenal reconditioned.
Of course, full lots of arsenal reconditioned or still packed in factory condition are much more expensive and quite frankly hard to come by in quantities that make it worthwhile for the nations to go through the expense of disposal through legal channels. They only way they will do so is if there is a lot of money involved. The original purchasers will get them for dimes on the dollar. Then of course the price goes up every time they cross a border or go through another distributor. Some nations insist on UN style markings and some insist they have to be qualified by their safety standards. All of this raises costs dramatically.
Once in awhile mixed quality lots come up for sale at very reasonable prices and in quantities that are affordable to smaller Canadian distributors. The distributors will either sell them as is or graded. Most outlets, even local gunshops will visually inspect the firearms before they go for sale. This doesn't mean they will be stripped down and inspected, just a quick inspection when they open the crates or shipping boxes. I have seen SMLEs and Martinis stacked on pallets 15 per row 20 high and held down with metal banding without any protective pads between the rifles or under the bands. Some of the rifles were as new or arsenal refurbed and some of them were scrap metal and firewood mixed.
I spent a lot of summer hours/days cleaning up/stripping down the junk pallets and stripping them for salable parts and even putting shootable units together out of the parts. That was close to 50 years ago but for some reason, I don't think a lot has changed. Numrich has to get their parts from somewhere.
When you buy a milsurp, especially in out of the mainstream areas like the Territories or Nfld. etc, do not buy a pig in a poke. Request pictures and a fair grade of condition evaluation. If you don't, it's caveat emptor.
Any shop I have dealt with will be very careful to make sure YOU have been appraised of condition before you purchase it. If you don't know how to grade a rifle, that is your fault.
OP, Depending on who you purchased it from this might just be one of those valuable lessons in life.