7mm, 139gr, lead-free (factory seconds) Hornady GMX on sale at MidwayUSA

[Cowboy T]

Saw these while doing some shopping. These are Hornady GMX (lead free) factory seconds. Weight is 139 gr, caliber is 7mm.

https://www.midwayusa.com/product/1010428353?pid=181752

These are the projectiles only, i. e. for reloaders.

[tabascoz28]

I got some factory seconds, probably not .25 MOA bullets but for hunting why not. I measured some ELDs once and there were 8 that were not like the others with some discoloration. Good for blasting.

[Cowboy T]

Still 52% off. I bought a box last week, and they actually look pretty good. Weights in my box are within half a grain.

[Calif Hunter]

I got some 6mm GMX seconds from Midway as they are on sale, too. I have had good luck with most of the factory seconds I have bought from them.

Has anyone had accuracy or fouling issues shooting them after Barnes TSX bullets, or vice versa? I understand they are not not pure copper ;like Barnes. Ditto for Nosler E Tips?

[Cowboy T]

I believe they're what's called "gilding metal", which is 95% copper and 5% zinc. There shouldn't be any greater copper-fouling with these than with the copper-jacketed lead-core bullets. In both cases, the copper is what the rifling sees.

[ar15barrels]

Saw these while doing some shopping. These are Hornady GMX (lead free) factory seconds. Weight is 139 gr, caliber is 7mm.

https://www.midwayusa.com/product/1010428353?pid=181752

These are the projectiles only, i. e. for reloaders.

After zeroing my 308 this year for deer season, I realized I was down to less than 20 rounds of lead-free 308 ammo so this comes at the perfect time since I was ordering bullets anyways I went ahead and grabbed a box of the 6mm and 7mm seconds as well as some more Nosler 20 cal leadfree ballistic tips because I end up shooting a lot more squirrels when out big game hunting than big game bullets.

[NapalmCheese]

I got some 6mm GMX seconds from Midway as they are on sale, too. I have had good luck with most of the factory seconds I have bought from them.

Has anyone had accuracy or fouling issues shooting them after Barnes TSX bullets, or vice versa? I understand they are not not pure copper ;like Barnes. Ditto for Nosler E Tips?

Gilding metal after copper is fine. Copper after gilding metal is potentially problematic. So if you switch back to something that is 100% copper (or 100% copper jacketed, looking at you Swift bullets) after shooting something that is gilding metal or gilding metal jacketed; scrub your bore to bare metal and use a decoppering agent before firing.

E-tips, GMX, and Winchester 95/5 bullets are gilding metal (of whatever composition, doesn't have to be 95/5 but often is). Every barnes expanding monolithic bullet is 100% copper. Some of the Barnes jacketed bullets are 100% copper jacketed, some are gilding metal. IIRC Swift bullets are 100% copper jacketed, along with a few other more boutique manufacturers.

[elk hunter]

I could tell a difference in shooting my 6.5 the other day when I switched from Hornady and Nosler to Swift bullets.