If i go from 100 to 125 will that mess up my spine? Im gonna try it, just curious what i should expect, I'm shooting 70lbs 29in draw, 28.5 in arrows, currently shooting victory arrows 350 spine, thoughts? Sent from my SM-G930P using Bowhunting.com Forums mobile app
I may be mistaken, but I don't think it will affect the spine you need. I'm shooting a 400 spine 25 inch arrow at 55 pounds, 23 inch draw, using either 125 and 145 grain field points with no problems.
you should be OK, but barely. going off of the Victory chart; I had to bump up spine when I bought my new bow over 330 IBO but it was b/c I shoot a 31" shaft- under 330fps and/or under 30" I would have still been OK. And that was with Victory 350s also. Speaking of- you need any? I have 2 dozen brand new bare shafts that I can't use anymore, lol.
Here's my group at 60 yards i think im good! Sent from my SM-G930P using Bowhunting.com Forums mobile app
The best way to undertand arrow spine vs weight is to picture a bell curve. If you spine is in the middle of the curve the weight change moves you off the center line, either stiffer for less weight or weaker for more weight. If your arrow set up is already off the center line then the weight added weight may have more effect because your already under spined. Or conservely if your already over spined and you drop point weight.
25gn isn't significant. Even if you're borderline you probably won't notice unless you're shooting crazy long ranges above 80 yards. Best thing to do is try the weight on a bareshaft and compare to your current arrows. If you're still inline horizontally but a little lower vertically you're good. Has to be with a bareshaft though otherwise you'll fool yourself. So unless you're spine was wrong to begin with I don't think you'll see much difference if any in this case.
