HEY HIPPIE I have tried the VAPs in a 400 spine, there insert is poor quality and bends easy, with the price of those inserts they must think they are made of gold [LOL]. Victory arrows run a little stiffer than most carbons i have tried. The victory HV3 shafts are 5/16 dia. and very durable, almost as light as the VAP and also cheaper. You can probably use the 400 spine with your set up easily. I was shooting a 30.5 in long 400 VAP or 400 HV3 with 250-300 grains out frt.I draw 29.5 in with a 55lbs carbon limbed bow. Hope this helps.