Speed Reduction With Increased Arrow Weight?

[WildmanSC]

I shot my DAS Gen II with a 51# set of Border ILF limbs in the Archery Shop last Saturday.  Shooting a 412 gr arrow, a hair over 8 gr/pdf I was shooting at a speed of 190 fps at my draw length of 28".

If I increased the arrow weight to 451 gr, 9 gr/pdf, how much of a drop in arrow speed should I expect?  And how about if I increased to 510 gr, 10 gr/pdf?

Thanks!

Bill

[loco_cacahuate]

check out this thread
http://tradgang.com/cgi-bin/ultimatebb.cgi?ubb=get_topic;f=6;t=002995