Russ and I just learned something. I think I have been totally discounting some bullets that might have shot really well but were 1.3-1.4 stability so never got the chance. Anyways must read

Remember, slightly marginal stability can result in a couple percent reduction in BC, but the precision of the bullets will be unaffected until the stability factor (SG) drops below 1.1. You can use the Stability calculator below to calculate the stability of this bullet in your conditions based on barrel twist and muzzle velocity.