RE: Sig 239 40 cal / 357 sig jamming
I have the Springfield XD in .357 sig. It had huge feed problems with the Speer Lawman
at any grain. I switched to winchester and have had no problems as of yet. A buddy of mine has a Glock 32C in .357 sig and had the same with the Speer. I guess between our experiences we can not consider this caliber universally the most reliable feeding. I had heard that Golck set their FTF record with the .357 sig caliber in their pistol.