David set me up with some alum Nocks and 125grn tips for my Easton carbon power bolts 20".I fletched up with blazer vanes. Shooting a Summit 150 I am now dead on at 20 yds with the first dot on my Horton 4X scope ,dead on @ 30 2nd dot , dead on @ 35 3rd dot and dead on @ 40 with the 4th dot. Can't ask for much more than that.I kept my Blazer vanes 1 5/16" infront of my nock. And with the new nocks , 125grn tips and blazer vanes my arrows are now comming in at 424.6 grns. I also want to thank David for his time and explaining some things about arrow flight to me . He is # 1 in my book
Dave C