the lawyers for the reloading companies make sure it does scare the fuck outta you for a reason because 10+1 might equal 50 and small fractions can increase pressure exponentially. That being said Ive found that there is usually room for improvement above most published loads. If I ever have the money to blow id like to do a "run it till it blows" to see just how far you could push loads to the point it blows the gun as they are designed to handle more than they are rated for