ORIGINAL: loogout1
I'll have to bring my reinhart inside and take some shots. By weak arrow reaction you mean spine is too lite? I'm shooting a 349/390 ACC at 27.5" out of a allegiance at 70lbs. and 27" draw.
In that case then yeah you are definately too weak in spine.
I shot 349s out of my Iron Mace (same cam system... just differnt name) and I shoot 63#s but 29" arrows and I got a weak spine reaction myself. If they are weak at 63#, 1.5" inches less and 7 more #s sure ain't gonna make 'em any stiffer. Personally I knew I was right on the bubble when I bought the raw shafts.... just wanted a bit lighter arrow since the ACCs are heavy by modern standards.... That was about a $150 lesson.