Midway has some .357 Sig bullets for sale in their factory seconds. Their stock number 618531. This is a 135 gr. jacketed bullet, with cannelure. FMJ, conical profile. These appear to be a production overrun from the Hornady .357 Sig law enforcement ammunition line. They make a FMJ training cartridge, Hornady no. 91298. Which mimics their duty round with the similar profile Flex Lock bullet, Hornady no. 91295. These bullets are priced at about 10 cents apiece, which in my view is a good price for a hard-to-find bullet. They measure .355 diameter. I don't load for the Sig, I just use these in 9mm. The Midway listing says, "may or may not come with cannelure." But the boxes of these that I've bought lately all had the cannelure.