I borrowed a chronograph to get some numbers off my first lam bow, a 64" TD longbow I finished a couple of weeks ago - roughly based of Binghams pronounced but shorter limbs and riser. They all seem in the ball park of my recurves of comparable weight so I am really happy - with 9 grains per pound coming in around 182 fps. I don't have a good bow scale (make that I don't have a bow scale), but hung some weights and measured and I think its about 49# at 28" and about 47# at my draw length. Also, it is wearing a twisted up 14 strand B50 string, will be interesting to see what D97 does for it. Here's the numbers:
arr wt GPP speed
560 11.9 161
555 11.8 163
500 10.6 169
445 9.5 177.8
425 9.0 182.5
488 10.4 168
475 10.1 171
It was getting late to re-do some numbers, but most were shot with my old well grooved shooting glove (a new Big Shot on order) but the 9 grain per pound was shot with a new tab and was about 4 FPS faster than with the glove.
Here's the bow:
And though I like the 3555 GoldTips with 200 grains up front (500 gr total) the bow does seem to like these 560 grain woodies as well!!