The Firing Line Forums - View Single Post - Why did they go with the 9mm bullets in the 357 sig?

**Mike Irwin** · December 4, 2012, 07:15 AM

As for why Sig went with .355 barrels instead of .357, I think someone earlier hit it right on the head -- commonality with barrels that they already produced.

Somehow, I sincerely doubt that that extra .002 to .003 diameter for the .357 bullets has any effect at all on bullet performance.

"from a loading/reloading standpoint most of the 125gr .357 bullets have a fair amount exposed lead"

That is but one bullet design for the .357 Magnum. There are many other 125-gr. .357 bullets that don't look like the Remington hollowpoint rounds.

December 4, 2012, 07:15 AM	#32
Mike Irwin Staff Join Date: April 13, 2000 Location: Northern Virginia Posts: 41,380	As for why Sig went with .355 barrels instead of .357, I think someone earlier hit it right on the head -- commonality with barrels that they already produced. Somehow, I sincerely doubt that that extra .002 to .003 diameter for the .357 bullets has any effect at all on bullet performance. "from a loading/reloading standpoint most of the 125gr .357 bullets have a fair amount exposed lead" That is but one bullet design for the .357 Magnum. There are many other 125-gr. .357 bullets that don't look like the Remington hollowpoint rounds. __________________ "The gift which I am sending you is called a dog, and is in fact the most precious and valuable possession of mankind" -Theodorus Gaza Baby Jesus cries when the fat redneck doesn't have military-grade firepower.