I will play a little pessimistic on the Dnipro crossing. Ukraine has had wild success, considering everything, but as of yet the Russians do not seem overly concerned. The assault in Avdiivka is continuing. Say what you will of the Russians, but I will not bet that their leadership would continue to piss away resources in assault for weeks if this landing was punching straight through undefended territory. Given the terrain around the crossing, it is possible that TASS was only sort of lying when it claimed Russian troops were falling back to a better line: it may be to the Russian advantage to allow Ukraine a small beachhead, if they can then defend from higher ground further from Ukrainian artillery. A breakout and breakthrough may still be possible, but at this point I expect this assault was an opportunistic strike intended to inflict attrition and divert attention from Avdiivka, not a serious attempt to cut the land bridge. At least, not on its own.
This is not very good for the crew, who are usually more expensive than their gun. It is also bad for the motivation of any other crews that are maybe firing similar ammunition. These factors likely contribute to the current qualitative and quantitative Ukrainian artillery superiority.IT happens when you plug a barrel for normal guns, but for artillery, the gasses bypassing and then building up pressure ahead of the grenade can cause the grenade to go off, immediately, on top.