Supposedly the currently under development US XM1299 is superior to the Koalitsiya-SV. That is not even just some fanboi
drivel, it is claimed by western official sources. But the reality is much different. The XM1299 retains the manual loading
approach of the M109. Where the SV can fire off 12 rounds per minute at its pre-loaded peak. The XM1299 appears to
be able to do at most 3 rounds per minute. With existing shells the SV can hit targets 80 km away. The XM1299 and US
long range artillery in general appears to be stuck in the range of 65 km to 70 km.
The nominally bigger bore of the XM1299 gun (155 mm vs 152 mm) does not imply it can fire off shells with more kinetic
energy. Similarly sized guns can have quite a spread in chamber pressure. The type of shell propellant used and how
efficiently it is detonated is a critical variable as well. Looks to me like Russian guns such as the one on the SV can handle
much higher chamber pressure than those of the US and minions.
US blowhards are also claiming they will easily develop autoloaders. For some reason they never felt the need over the last 50+ years.
Even if the autoloader development for the XM1299 does pan out the fire rate would still be limited compared to the 2S35. Without liquid cooling the risks of overpressure firings increase tremendously with fire rate and the lack of microwave ignition does not help with cook-offs either. Another issue is the lack of a bore evacuator though they could've opted for a forced air ejection like the Leclerc instead which is still a bit funny since the 2S35 with no man in the turret has one and this one doesn't.
Fires cannot go through containers. Are the charges stored in a microwave safe container during transport? I am sure they must have thought of this but would be interested to know what measures they took. The homogenious ignition is brilliant. I wonder why they have not come up with a more aerodynamic shell with a tapered rear, and use a sabot for firing. I wonder what gain would be from eliminating the flat rear.
Fires can burn through or just raise the internal temperature enough that it won't matter. And I'm sure they must have considered the question of microwave safe containers at least once during the years long development process. Not that it will stop us outsiders looking in from thinking we are better than the designers.