Turning a 340 crank, How much is to much?

anything over .010 for a high torque high reving motor using heat treated federal mogel bearings. The crank will be destroyed quickly. For a normal performance 340 -360 I seen .030 with no issues. Soft bearings are easy on the crank but don't like hard loads. Hard bearings with heavy loads eat cranks that are turned through the hardened surface. I chose a Callies super hardened stroker crank and real hard bearings. Not the way to go for the street but the strongest for my foot. If you load a soft bearing it squashes in the rod. This causes it to free up the lock and spin. If it spins it usually sticks fast . At high rpm's this causing the rod to to break. You know where this is going. There is a choice of parts for every build. Make these wisely or you'll pay on the big end. If you can take a bearing and squeeze the end together easily they are for non performance motors. I wouldn't use them in any motor. But they will survive in a .030 cut crank under light loads????? A good bearing you can stand on and not squash them flat. But you need a real good hardened and polished crank to use them. Just some words from someone who's been there and paid the price for not listening to the wiser.