cavalryman said:
Question for the gunners out there. That loading system they have seems to allow them to pump out three rounds on target rather quickly. Seeing as the last time I was close to a gun line was almost 25 years ago, I have absolutely no frame of reference as to whether this is an advantage over how we loaded the M109 (or load the M777 nowadays for that matter) or is it simply more gadgetry to break. Opinions from folks who know about this stuff?
The gun, as old sweat has pointed out, is an old design, this load thingy doesn't seem to add much, except sustainment costs
From a practical point of view, it is useful to have something mechanical to aid loading for sustained fire, but there has got to be a better way to get that done without all that damned movement (and I'm not talking about all that ridiculous jumping and hopping around).
The M109 had a relatively robust loading system, and could still work even if the hydraulics were down, but sustained fire was another thing. Anyone who served "back in the day" when there were fire plans with real rates of fire, know that it doesn't take long before it gets very tiring to keep that gun fed
The M198 is another story all together, a tray with the bullet held up to the breech by 2 gunners while two others rammed it in: hard to break the brute strength and endurance that would come out of doing that a lot, but you wouldn't want to be doing it a lot either
The M777 has the breech so far up that it does require some loading aid. The M777's breech operating and loading system looks a bit complicated too, but it certainly isn't as over engineered as this system seen on this "newer" version of the FH77. M777 system will still work if the hydraulics fail, something the FH77 looks like it would have a problem with
The idea of long sustained fire, or even rapid multiple round fire for that matter, is debatable anyway. With more accurate laying systems and precision guided munitions, the situations when sustained fire is needed are less likely. So the need for a complex loading system isn't as great.
The reason FH77 is so big, is to support a long (45 cal) barrel and, from that, get longer range. But even there, all that carriage weight to support it and give stability is a somewhat outdated idea. Better gun and ammunition design fired out of a lighter shorter barrel is a relatively more effective solution to get that range.