[CatoRenasci]

Field artillery tubes are usually in one of the following sizes:

105mm -- now mostly airborne and reserve
155mm -- now the standard battalion level tube artillery
17mmm -- probably all gone now, maybe some in the reserves or Guard - were very long range, tiny deflection probable error, large renge probable error, biggest problem was short barrel life.
203mm -- the famous 8" howitzer, probably the most accurate artillery piece fielded by any army, ever.

All of these, except 105mm, are usually self-propelled these days, although there are some towed 155mm (M198).

[lormand]

Thanks for the great info on artillary tubes. I am soaking it up like a sponge.

I am extremely greatful to the men and women who have served our country.

[Darksheare]

Got to see an M-198 self fold.. after the barrel was cranked to the ground.
That crew did an oops.

[Orangedog]

I'm still waiting for 'Atomic Annie' to make a comeback. ;) 280mm's of tactical nuclear fun!

[neverdem]

The 4.2" mortar had a rifled barrel. IIRC, a crew in Sicily during WW II got a round into the open hatch of a kraut tank.

Probable errors are always going to be greater when either a mortar or howitzer fire a high angle mission because of the greater trajectories as opposed to a direct fire or low angle missions with with howitzers.

[Oztrich Boy]

17mmm -- probably all gone now, maybe some in the reserves or Guard - were very long range, tiny deflection probable error, large renge probable error, biggest problem was short barrel life.

Not the miniscule explosive bursting charge?