ORIGINAL: LBR
8 strands is enough (with padded loops), but I don't like it. I've heard from a few folks about smaller 450+ strings breaking without warning. I've also had another stringmaker (Rod Jenkins) tell me he's heard the same. Obviously it doesn't happen a lot, but it does happen.
Padding the loops is easy. I use dacron for the padding, whether it's 450+, Dynaflight '97, or 8125. I cut my strands about 15" long, and stagger them on the ends. For 450+, I like 14-15 strands in the loops (total--for an 8 strand string, add 3 strands of padding in each of the two bundles).
For the center serving, another way to get a good nock fit is use dental floss on the nock point. Just build it up to the fit you want, then add super glue and it should last.
Chad
Whats your favorite Chad for performance from longbows? D97, 450plus, 8125?