Is Russia Running Out of Artillery?

Russia seems to be going so far out of field to get ammo is suggests there's a problem. Some suggest the Ukrainians will be in better shape with ammo because they have so many backers or we have manufacturing as well. Manufacturers goes down for some reason, but it feels like desperation. Can't know for sure. But I think one of the storylines is that Russia just will run out of assets because their artillery barrels are melting. This is something else I didn't know until recently. Did you know that artillery guns wear out? You can only shoot them for so long and you have to change the whole barrel. So they may be running out of artillery because the Ukrainians have more accurate stuff