Unfortunately in technical characteristics in the instruction to B-11 there is no information about penetration.
Here link on technical characteristics B-11:
www.pecypc.kz/kramax/b10b11/804957.jpg
Here:
The second line - 450 metres - range of a direct shot
The fourth line - initial speed of flight HEAT of a shell - 400 metres per second
Kind of sight B-11:
www.pecypc.kz/kramax/b10b11/889919.jpg
HEAT a shot to gun B-11:
www.pecypc.kz/kramax/b10b11/899538.jpg
PHOTOS (pictures) B-10 and B-11
B-10;
www.pecypc.kz/kramax/b10b11/270.jpg
B-11:
www.pecypc.kz/kramax/b10b11/271.jpg
========================================
Even our data here have an error - HEAT penetration shell B-11 should be even less 290mm:
http://www.militaryparitet.com/nomen...protivotank/3/
The third line of the table.