My gas-check bullets are hard (19 BHN) and tough. The alloy is made by melting a 20 lb. pot of wheelweights and adding two one-pound ingots of linotype. The bullets are dropped from the mold into a bucket of water. The 300 gr 452" revolver bullets (LBT LFN mold) at 1400 fps penetrate up to 36 inches of saturated, tightly bound telephone books. The 405 gr 459" bullets (RCBS mold) at 2000 fps from the 45-70 don't break up when they completely penetrate the test medium, and are deformed only slightly when I dig them out of the dirt berm. Bullets cast of straight wheelweights and dropped into water are slightly softer at 15 BHN, and rivit, but not a classic mushroom, in the test medium. Both penetrate about 30 inches. These results may be easily duplicated in GB with the purchase of a mold, thereby eliminating the problem of shipping bullets or ammunition.