Hornady GMX Bullets

[Huntnut]

Anybody used these yet-I managed to snag a box of them for my 7mm rum but am having trouble finding any reloading info on them.

[DennyV]

If you read on hornady's website they say the same data for sst's and interlocks of the same grain weights work.

[Huntnut]

Originally Posted by DennyV

If you read on hornady's website they say the same data for sst's and interlocks of the same grain weights work.

Yep I read that. I was wondering about wheather they like a long jump to the lands like the e tip or not.

[elkhunter11]

I would start with a longer jump to the lands and then experiment a little.

[Traps]

I would just start at min and work up for any powder. GMX's like all the other all copper bullets are about 20-30% longer so if you can do the math work it out to how many more grains of powder you'll lose with more bullet.

[DennyV]

I played a little with the 150's in my 30-06 and found best results at the saami bullet length. They dont seem quite as finicky as the barnes or e-tips when it comes to the initial jump. But that my just be what works in my gun. Good luck with the loading. The on game performance is very good. They are my primary mono-metal bullet choice....in the calibers available so far LOL.

[heymshooter]

I've used them in a 300 wsm(handloads, a 270(handloads) and a 243-a whole lot of one shot kills-I think you do have to push them since they don't open well at low velocities

[209x50]

I've had my best luck in my RMR's at 30 to 35 thou off.

[ishootbambi]

geez i came close to trying them....had em in my hand today but just couldnt do it. someday.....maybe....

im not afraid of lead and just not buying the hype.....but all the same i can see a lead ban coming down the pipe in the future.

[CaberTosser]

Originally Posted by Traps

I would just start at min and work up for any powder. GMX's like all the other all copper bullets are about 20-30% longer so if you can do the math work it out to how many more grains of powder you'll lose with more bullet.

The thing is, GMX's aren't all copper; they're solid gilding metal. 95% copper and 5% zinc. Solid? Yes. Pure copper? No. Thats one of their sales points versus Barnes, there's a bit less copper fouling with their alloy.

Originally Posted by CaberTosser

Thats one of their sales points versus Barnes, there's a bit less copper fouling with their alloy.

Plus they are a six petal design.

[BrownBear416]

Me and my buddy both tried them in our 280s and they wouldnt shoot. Seems like a well made bullet. I would try them again with another rifle..

[rem338win]

The .270 didn't like them either or I would have used them on my moose. Fusions got the nod instead.
I will try them again sometime and see if I can make them shoot. I like buying red boxes.

[Squeeker]

My R700 7RM likes the GMX slightly better than the TSX, which it really likes... I did find that the hornady's fly a little flatter though. With the 6 petal design, are they more apt to open up better on lighter game animals? Would they penetrate as well when going through a larger, bigger-boned animal such as a moose when compared to the TSX? -SQK

I wouldn't say they open easier, especially when compared to the TTSX but they do offer increased frontal area much more similar to a bonded bullet. This increased friction undoubtedly slows them down a bit faster but with such high weight retention, penetration is pretty much of a non issue with all of the mono metals.

[H380]

I know they are all pricey , GMX AND TTSX, but do they act much differnt than a FMJ? Might be interested in pelt saving ..

Originally Posted by H380

I know they are all pricey , GMX AND TTSX, but do they act much differnt than a FMJ? Might be interested in pelt saving ..

A lot different!!!!!!!!!!!!!!!!!!!!!! They definitely aren't pelt friendly.

[Jordan Smith]

Are they really a 6-petal design, or are they simply a hollow-point solid, who's hollow cavity tears into a random number of petals on impact? Do we have enough recovered bullets to know for sure? Just asking.

[209x50]

A 6 petal design.

I've only got one back...here it is compared to a couple bonded bullets and a TSX. I got much better expension than advertised. The two lead bullets are .30 cal and the TSX is 338. The GMX is 7mm.

[H380]

Originally Posted by sheephunter

A lot different!!!!!!!!!!!!!!!!!!!!!! They definitely aren't pelt friendly.

Thanx TJ, I'll stick with my tried and true .. just saw they were available and wondered ..

[whitetail Junkie]

I think that I bought some 3 days ago in Hornady Factory 17 HMR?

EDIT...Nope it says V-Max on the box...my mistake.

[Jordan Smith]

Originally Posted by 209x50

A 6 petal design.

I just did a bunch of looking around at different pictures of recovered bullets. It doesn't look like the GMX is designed to open up into 6 petals. It looks like it's just a simple hollow point that ends up tearing open into various petals. The number of petals seems to be different for each recovered bullet that I've seen. Has Hornady specifically said that it's a 6-petal design, or are you just saying that based off of observation?

Just curious. Thanks.

[Arn?Narn.]

I've shot GMX's TSX's and TTSX's fairly extensively in my 7mm-08.
I say the difference between them is minimal at decent velocity.