This is currently loaded nitro for black powder ammunition for firearms chambered in 500 3" Express (BPE). When available, we use a .512" diameter, 350 grain bullet (our item#512350) and USA manufactured brass (our item#JAM5003NE).
NOTE: All ammunition is shipped via FedEx or UPS Ground "Adult Signature Required" Only! So be sure you have a physical shipping address on your order as they will not deliver to a P.O. Box.