That's an interesting idea.
Unless my knowledge of radioactivity is flawed, the SKS themselves would not have become radioactive, though they certainly could pick up radioactive matter. Would not the potentially contaminated matter be removed by the vigorous cleaning required due to the corrosive ammo.
Exposure to radiation doesn't make an object radioactive. If you live in an industrial city you are at way more risk breathing the air.
Exposure to Ionising radiation will make steels radioactive, but that fuel would have been used up during the reaction that caused the big boom from a bomb. Cleanup afterword would only be exposed to leftover alpha, beta and gamma radiation, which does not turn things radioactive. The reason with chernobyl is that everything got exposure to ionising radiation because there was still a significant amount of hot/spent fuel that was unshielded and emitting ionising radiation.
So like Stevebot said, the whole refurb/cosmoline/cleaning/recleaning after corrosive process would have likely gotten rid of any possible contamination that may have possibly gotten onto any rifles.
And like it was said by a few people, take a flight down south or out to alberta and you'll pick up more radiation from the sun than from anything else. Hell, plane flights combined with banana's, granite counter tops and cigarettes exposed people to more radiation than anything else.
I'd be more concerned about the huge amount of above ground nuclear testing the US did, and yes, a lot of it rained down on us in Canada.
I'd also be more concerned with purchasing surplus that was in Iraq with all the DU used.
As for paranoia, you should be asking yourself why it seems Russia is more on our side than our own frickin' government these days ....
Nearly 25 years after the accident took place, these wrecks still throw off up to 30 roentgens an hour — approximately one-third of the amount needed for a lethal dose after prolonged exposure. Now they sit in a field in Rassokha, 25 km southwest of the power plant.
And on the lighter side: There is no truth to the rumor that Norincos are made from steel out of defunk nuclear reactors.

Take everything written in the above post. Change irradiated to contaminated and it would then be correct. Whoever wrote that does NOT work in the nuclear industry. Take my word for it or not. I work with this stuff every day. I'm hardly a naysayer.
A simple analogy: Follow directions and microwave a pizza pocket. You just irradiated it. Put it in for too long and it explodes. You just contaminated your microwave. Contamination can be cleaned, but sometimes the job is impossibly huge as in the case of Chernobyl. If one were to recycle contaminated metals from Chernobyl, the contamination would be mixed into the metal. That would be considered fixed contamination. Detectors will pick it up, but that doesn't mean it's irradiated. Just "hosing it down" will work, to a point. You have to contain the run off. Not everything will get clean. Contamination will stick in the pores of some metal, get trapped under paint, etc.
This is a pretty easy way to explain it since light is a form of radiation.I dont work with radioactive stuff ,so I am not an expert. That is why I ask...
I recall asking an NDT welding inspector about radiation.
He compared it to lighting up something with a flashlight.
Turn of the light, and it is no longer lit up.
But, if I understand the difference between Irradiated and Contaminated correctly, Contaminated refers to smoke and dust particles spewing out of the burning reactor covering everything around with fallout. This fallout is what poisoned the field of vehicles.
Correct?




























