I've been feeling a bit coldy today but I've had a couple of little dabbles with the bow. I made a string, braced to about 3" (90 strands of fine linen thread).
I pulled it back to 12" 70# on the tiller. I then put it on the stock where I've cut the mounting slot and heaved it back to 13" !
Dunno how far I dare push it. Pulling it on the stock gives me the position for the trigger groove.