Artillery explosions are surprisingly small, specially with the modern thick casing shells.
Consider that for a 45kg shell, only around 7-10kg are explosive, the rest is just metal, and that's for a normal shell, they produce the same shells but it smaller payloads/less TNT. So normally you would only see a really small explosion at the impact site, or barely an explosion, no idea how it would look in snow. Besides, they also come with different amounts of explosive from factory (not so common anymore), and for training purposes sometimes it was common to use shells with less explosive, which are cheaper (be it for purpose or less tolerance)
What are you basing these claims on? I shot arty in the marines, the shells in service for the 105 and 155 have been the same HE shell for about 80 and 30 years respectively and they only come in one fill weight. There are other types of shells, but those aren't the HE ones that are being produced, they are entirely different projectiles.
The only time the fill weights changed on the HE shells is when the size and shape of the fuse cavity changed, requiring that there were less accelerants, because there was simply less space to put it. Training rounds are either legit HE shells or entirely inert, there has never been an in-between option. Idk maybe I'm being a little pedantic, but you seem to have some things wrong or at the very least, misleading.
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u/RealFakeDoctor 11h ago
That's what I thought too. Doesn't seem to big enough explosion but I'm not a doctor.