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Old February 18, 2002, 10:49 AM   #1
Join Date: February 12, 2002
Location: Plano, Tx
Posts: 29
.355 vs .356

Most .380 & 9mmbullets I see advertised are .355 but I keep seeing .356 popping up. Whats the deal with this? Is .356 Safe?
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Old February 18, 2002, 01:22 PM   #2
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Join Date: November 9, 2001
Location: Virginia, USA
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.356 diameter bullets were originally used in the .38 ACP and .38 Super. Check the groove diameter of your barrel before ordering bullets.
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Old February 18, 2002, 02:50 PM   #3
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Join Date: October 29, 1999
Location: Dewey, AZ
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stans right but the difference may not make a hill of beans.

At one time I was furnishing ammo for some LEs. Some were transitioning from wheels.

We slugged a couple hundred barrels. .357 in Smith and Colt. 9X19 in Browning and Smith.

Barrels from all four types of gun ranged from .3535 to .359. Later found a Colt .357 that had a .353 bore and it was a tackdriver.

If you are going to be picky, going to have to find out what bullet and load YOUR gun likes the best.

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Old February 20, 2002, 07:16 PM   #4
Join Date: February 16, 2002
Location: Wichita Falls,TX.
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The true diameter of jacketed factory 9mm bullets is .3555 (right in between .355 and .356) Some round up, some round down.
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Old February 21, 2002, 07:40 AM   #5
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Location: home on the range; Vermont (Caspian country)
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Miked some "9mm" projectiles; ranged from .3545" to .3578".

I match exact size for my Nowlin match barreled 9x19, otherwise I don't much care..............kinda.............
"all my ammo is mostly retired factory ammo"
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