bonded SP's vs copper solids

[mr h]

if a guy was preparing of TEOTWAWKI, what would be the preferred round for urban combat between bonded soft points and the copper solids like 55gr GMX or mk318? not concerned about over penetration.

seems like a horse and a horse between these 2 types of projectiles, right?

thanks in advance.

[markm]

The potential for Copper fouling prevents me from messing with the Copper solids at all. We shoot ammo across too many barrels to have any of them unhappy with copper.

[sevenhelmet]

Can't you get copper fouling from any copper-jacketed bullet? How does a copper solid make copper fouling worse? I'm just asking in order to learn something.

[markm]

Can't you get copper fouling from any copper-jacketed bullet? How does a copper solid make copper fouling worse? I'm just asking in order to learn something.

Regular bullet jackets are made of a gilding metal... Copper with some amount of zinc so the jacket is a little harder than pure copper. So there's reduced metal fouling.

(Metal heads, forgive me if my explanation wasn't perfect)

[mr h]

i thought the copper fouling from solids was just mainly the TSX because they use pure copper..?

whereas the GMX was a alloy of mostly copper..?

[mr h]

where does mk318 fall in the copper composition department?

[markm]

i thought the copper fouling from solids was just mainly the TSX because they use pure copper..?

whereas the GMX was a alloy of mostly copper..?

Could be. I thought they were all Pure copper.

[mr h]

Could be. I thought they were all Pure copper.

i think it was in the GMX thread here that someone talked about the differences with TSX and GMX..it also mentioned that the TSX sheds peddles because the is pure copper is more brittle, where the GMX actually mushrooms.

[Onyx Z]

i thought the copper fouling from solids was just mainly the TSX because they use pure copper..?

whereas the GMX was a alloy of mostly copper..?

The TSX line of bullets are 100% copper. The Hornady line of GMX bullets (gilding metal expanding) are 100% gilding metal, which is 95% copper and 5% zinc. I'm no metallurgist, but the 5% zinc adds some hardness to the copper to prevent excessive copper fouling.

[sevenhelmet]

Regular bullet jackets are made of a gilding metal... Copper with some amount of zinc so the jacket is a little harder than pure copper. So there's reduced metal fouling.

(Metal heads, forgive me if my explanation wasn't perfect)

Of course. That makes perfect sense, thanks. One wonders why a company wouldn't use gilding metal in its bullets- cost maybe?