Quote:
Originally Posted by Marcello
Quote:
Originally Posted by Pibwl
One more thing: according to a quoted Russian article, the first Heat round for 100 mm D-10T gun - spinless 3BK5 / 3BK5M (according to Bronekllektsya, 390mm penetration) was introduced only in 1961. Also in Tekhnika i Vooruzhenie 10/2008 monograph on T-54 there is ammo for T-54A quoted: 20 HE, 14 AP, and Heat is mentioned only from 1961.
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From what I recall from discussions on tanknet BK-5 - BK-5M had rather different performance, it was something like 280mm - 380mm (BK-5M incorporated a wave shaper). BK-5 was also available earlier, around 1958 or so. |
I'm only quoting what is in publications:
- M. Pavlov and I. Pavlov in TiV 9/2008 write, that in 1961 there was introduced 3UBK4 cartridge with 3BK5 or 3BK5M rounds. Heat round could pierce 180mm inclined at 60deg (they don't write which one, but it looks like both were similar). There is no explanation of the difference, but in case of 76mm D-56, BK-354 had steel cone, while BK-354M had copper one (M for "myednaya" - copper). They repeated it in TiV 10/2008 on T-54 tank.
- authors of Bronekolektsya 4/2008 on T-55 tank even wrote, that 3BK5M was used in T-55 from 1963, and it penetrated 390mm.
Regards
Michal