mq1, not to step on your toes, but that 800 pound thing is just a bad idea. depending on the material, 300# is overkill. 452x can't stretch that much. the vectran in 452x isn't actually woven into the material. its pure dyneema just like 8125, but thinner, witha strand of vectran inside each strand. this is evidenced with a lighter. 8125 (1 strand) when exposed to a lighter will burn evenly. with 452x the dyneema will burn the same with the strand of vectran inside trailing by about 1/2". 800# will definately start fraying the vectran inside the dyneema, damaging it, and leaving you with a super thin 8125 string. for 8125 string, if you leave it on 200 pounds for about 30 minutes, you'll make 1 adjustment after a few days of shooting and that will be it. why anyone would take a string to about 1/2 its breaking pt. is beyond me. just sayin'.

the brownell materials are no different, with ultra cam having even more vectran than 452x, and already, if you search, you'll find many more instances of catastrophic failure with it (though still very few). that means it can stretch even less and needs less tension to serve than 452x. the ts1+ is a treated version of 8125 to try and add some speed and reduce the stretch, but with not so perfect results.

i guess what i'm saying is taking every last drop of elasticity out of a string just isn't good for it, and in the end gives you a louder bow.