I really don't understand why the weight explanation is not 1.0

I can’t figure it out, my weight 11.3 often goes into 12.0 why; last time it was 113 every day into 10.3-10.7; I’m really annoyed. Not to say the weight of 1.0, my 11.3 often goes into 11.7-12.0 Japanese 90-style, damage 480, armor penetration can’t beat other countries’ weight of 12.0, damage 580620, the highest second kill me, you are playing with me, last time I used 11.3 often goes into 10.3-0.7, not bad, why, really a bastard.