In a recurve limb if all things are equal except ONE thing and that is going from an .002 to .001 taper. Any idea how that will change bow weight?
A wild guess from my side would be an increase of 5 pounds in a 45-50 pound bow. Any thoughts?
I'm thinking butt end the same.

I'll guess a couple lb.  ??

3 lbs.

I'd be willing to bet the bow will weigh about the same for either taper. 

I'm thinking weigh a few pounds more and shoot a few fps slower.

Bue will you try this and let us know for sure right 

you could gain a fair idea using math. If it was 30'' limb and using both tapers, then give say a nominal lam with .090 butt. Comparison between it with .002 taper gives .030 at end and the .001 would be .060. Express these as % of each other and % difference might give # altered.Hope that doesn't sound too convoluted!.

On my last set of limbs I ordered a taper at 0.100" with a .001 taper and a parallel of .050. I  ordered the .001 taper rate by accident. I had been using the same stack with a taper rate of .002 on previous set of limbs. In order to compromise for the thicker taper I reduced the width of the limbs and still ended up with limbs that were about 5lbs heavier than the previous set.  My guess is before reducing the width they were probably 8 lbs heavier. I cannot comment on speed. But the .002 taper seemed to produce a smoother drawing bow. These were Bingham's limb design.

To start----if your riser is 20" your stack will be .010 thicker at the end of the fade, So it will be heaver.
SO make your stack .010 thinner to start with, you should be closer to your weight, your limb width needs to be more like a pyramid and then narrow more at the last 6", so start with 1-3/4" glass.