How about some perspective on ballistic velocities. I'm an engineer, I love numbers and math!!!
I'll repost the game values again. I am assuming these values are in meters per sec (m/s)
Gun Velocity (m/s) (New Velocity (m/s))
AC5
900 (1300)
AC10
850 (1100)
AC/20
750 (950)
PPC
1200 (2000)
ERPPC
1200 (2000)
Now for some real life cannons
M2 75mm -
588 - This is the 75mm, rifled gun which was mounted on the M3 Grant used by the Allied starting in 1941
This was an "early war" gun designed prior to the US entering (and fighting) Zee Germans. It was short
barreled and primarily designed to deliver HE rounds in infantry support roles. Did not fare well against the
top tier german armor like Tigers, Panthers, Panzer IVs
M3 75mm -
619 - The next generation of the M2 with a longer barrel. This is the gun mounted on the classic Sherman Tank.
Again, this was still designed as an HE gun, not a dedicated tank-killer. In fact, according to pre/early war
tactical doctrine, Shermans were not to engage enemy armor and instead support infantry.
M5 3inch -
792 - This was the US Army's early war "Tank Killer" gun. Used as an AT field gun and mounted on the M10 Tank
Destroyer. Not a stellar success against the bigger German tanks; and lost effectiveness past 500m
M1/2/3 90mm -
823 - This was the US Army's end war tank gun. It started as an AA weapon but, as the US continued to encounter
the German Big Cats, was pressed into AT roles. Eventually mounted on the M36 Tank Destoryer.
88mm Flak -
820 - The famous German 88.
21cm Kanone 38 -
905 - Big German gun. Not many produced
80cm K(E) -
820 - This puppy was mounted on rail cars! Think Long Tom... but bigger. Each shell weighed 7 tons.
Those were all 1940's era guns.
L7 105mm -
1490 - The British designed gun that became THE tank weapon for the west until the advent of the smoothbore
guns. Rifled, the actual muzzle velocity will vary depending on manufacturer and ammo type used.
Rheinmetall 120mm -
1580 to 1750 - The smoothbore we all know from the M1 Abrams.
So, it comes down to how far back did ballistic technology slip in the BT universe? I'm unable to account for any scaling differences between the game "meter" and a real life "meter" as I don't know how they set the scale. But, looking at the new values for the AC's, we will be getting cannons that are roughly equivalent to the 1950s and 1960's technology. Mind you, we don't know what the actual muzzle lengths on the mech mounted guns are. If they are shorter, you can justify slower velocities.
Physics and engineering aside; I think the AC's needed the boost in velocity. You will still have to lead your shots, but a bit less. And remember, these shots have bullet drop on them as well that us AC lovers have to account for. Makes them a bit more viable to use against all the lights that are swarming around the matches these days.
The PPC needed the velocity boost in a big way. This sucker needs to be worth the heat it builds up in a mech and this is one step towards balancing the books on it.
Edited by Kommisar, 13 December 2012 - 12:51 PM.