A projectile having a body of sintered metal powder and a sintered metal powder surface that faces toward the rifling in the bore of a firearm, and therewith co-acts with the rifling. The present invention particularly relates to the soybean variety AR0912509 and its progeny, and methods of making AR0912509. An average burst packet loss length within a quality estimation interval is calculated from the burst packet loss length. Cathode electrodes are formed on the insulating layer. If the supplied current value exceeds the detecting current value, the current detecting part informs a current detection control part of abnormality occurrence.