357 sig Frangible bad for your barrel?!?

[creeky]

Okay guys, I have shot Speer Frangible ammo through my Hk.

he functioned fine and was accurate. It is also very cheap! I had expected to try and use it when I got the money together to take the C.I.S. Defensive Pistol class.

Now I am reading on other gun forums there may be a problem with this frangible ammo, especially in the .357 sig caliber! (YIKES!)

Here is a snippet of what I have read...

"This issue was personally discussed as it related to Sig products, and specifically to .357 Sig frangible LEO practice ammo in 2006. At that time, there were numerous reports of factory Sig barrels that, after extensive use with frangible ammo, appeared to have nearly smooth bores because most of the rifling had been eroded. The only factor common to all guns with this problem was the use of non toxic ammunition with frangible bullets. No one can question the fact that this phenomenon has happened and has been well documented for years.

The only question left to be answered is this: do frangible bullets cause this extreme form of erosion, or is it the lead-free primers used in "non-toxic" ammunition?"

Does anyone else have any more knowledge or experience with this?

I'm hearing it's basically wearing out the rifling at an excellerated rate.

Needless to say I have 150 rounds left, out of 250 I have bought. I don't intend to buy anymore mind you either. This has made me more than a little wary.

[Guest JHatmaker]

Interesting, I own a .357 SIG (Glock) but have never used that particular kind of Speer. I'll be watching this thread closely.

[nightrunner]

so that's how you make an untraceable gun, practive alot with bullets that erode the rifling so they cant trace the bullet back to you, brilliant!

[nightrunner]

back on topic though, ive never heard of this and will be watching the thread to see what comes out of it

[TripleDigitRide]

I've never had a single issue with frangible ammo.

[creeky]

Thanks guys... trying to figure out if this is an internet myth, or if there is any hard data out there to confirm.

It's cheap, and functions well in my HK, but I don't want to do anything to damage it.

[DWARREN123]

Is it with firearms that have Enfield/cut rifling or polygonal or both?