Am I right in thinking the RHS team have worked out the armor values on their own due to there being no official documentation? Cause if so I'd love to know how the hell you worked out Chobham armor's values. By the way just to clarify this isn't a dig like 'oh Chobham is secret, you guys have to have gotten it wrong'. It's just growing up near(ish) Bovington it is understandable that one is obsessed with the challie 2. As far as i know the only tank outside of the Challenger series to have Chobham armor is the Abrams...and the only people who have taken time to do the maths is you guys. So I'm genuinely interested to know how you did it, cause I have to say i'm very impressed. Although, I am aware that this could be a trade secret, so not gonna cry if you say no....well maybe a little...