GarryB wrote:AFAIK they are withdrawing the 100mm rifled tank gun calibre with the T-54/55 and the 115mm smoothbore with the T-62, to leave the 125mm smoothbore calibre as the only remaining tank calibre till the new 15xmm calibre is needed.
With regard to artillery calibres in terms of guns and gun howitzers the 122mm seems to be getting dropped in favour of the 120mm rifled gun/mortar calibre. The 73mm BMP-1 calibre IFV gun is likely to be dropped but the question remains regarding the whole 30mm + 100mm vs 57mm calibre and also the 14.5mm and 12.7mm calibre vs the 23mm light calibre.
152mm calibre is assured due to MSTA and coalition, and the replacement of the 122mm with the 120mm suggests the 122mm might be retired.
Within NATO the 105mm seems to be redundant except for very light very mobile mountain guns and I would expect the same with the 122mm Soviet calibre.
the 160mm mortar was a rare piece for mountain units mainly so I suspect the 82mm and 120mm will remain standard calibres... perhaps with 240mm as a backup for special use?
This means in the Army they will be getting rid of at least the 100mm and 115mm tank guns, the 73mm IFV gun and the 122mm artillery gun calibre and all the ammo types they support... though the guided 122mm shells are compatible with 120mm apparently.
Thanks for the input garry,
yeah your right about the 122mm being replaced by 120mm mortar, the 2S1 has had some of its barrels replaced with the 120mm mortar system think they call it Chosta.
on the point about 73mm being dropped and being replaced with 30mm and 100mm, as in the case for the BMP3, and the the 73mm being replaced with 57mm on the PT76. I was under the impression the 23.5mm replaced the 14.5mm.
I think the 57mm is a pretty decent round to replace systems like the 73mm, but I suppose intil they put into production of the new replacement i.e boomerang etc we will have to wait and see. either way it will be interesting. Its a huge replacement program.