If you look at capra review
Youll see this in the comments
‘For a 95kg with a 400lbs spring you get a ~32% SAG at shock, however, due to the progressive nature of Capra, this corresponds to a 38% real SAG at the wheel travel. With a 450 spring you get 28% SAG at Shock and real 34% SAG at wheel. Going lower than 400 lbs means that you get a very soft initial travel (real SAG higher than 40%), which migth be way to soft (?) contributing to pedal bob. Bottom-outs should be ok even with such a soft spring given the progressive nature of the bike. I would stick with either a 400 or 450. The online calculators don’t account for progressive frames, so in this case, the results can be tricky.’
I started with a 350, now Im on 450. 500 felt ok but Im 75kg and like drops n jumps
Hope it helps