I have 44 Thor 250 grain, .502 dia M/L bullets that are not the right size for my M/L. I guess I screwed up and ordered the wrong size....too big. If you can use them, they are yours for the postage. Send me a PM where to send them and when you get them just send me a check for the postage on the box. I also have the "try" set they send you to determine the correct size of your barrel.