Effective shielding is the total amount of damage needed to bring down shielding. My 'Vette's base shields (7C Biweave) are 630MJ, plus 2x7A SCBs (each totalling 3,250MJ). and a 5A in reserve (1,00MJ). 630 + 3,250 + 3,250 + 1,000 = 8,130MJ.
G5 A grade HD SBs give ~55% to base shields, I run 4 HDs and 2 Res, so ((55x4)+(20x2)=260%)x630) = 2,268MJ (1,638 increase). 1,638/8,130 = 20.14%. So not quite <20%, but acceptably close considering it was off the top of my head.
lol
you should learn math again: 1,638 / 8,130 = 0.2014 = 20.14%
this way says your unboosted shields have only 20% of your boosted ones.
your boosted shields is actually the inverse of it: 496%
in other words, you're "hardly out of control" boost is a factor of ~5 or and increase of ~400% *
and thats just your absolute increase, since you have modded the resists too, which will add another large amount of "Effective" hitpoints against ontop of it against non-absolute damage weapons.
just to remind you - 50% resist translates into a factor of 2 for the EHP for the respective damage type.
also, what many do not get into their brains - the diminishing returns starts at 50% for some reason: every % above 50% is worth more EHP then one below.
75% resists translated into a factor 4. so for
*I have to ask my boss for such an insignificant payrise at some point... [rolleyes]