Gmx on game performance

From what I’ve seen, they are a touch softer than the barnes stuff. Open a bit more quickly, penetrate a bit less. Still a solid choice for medium range use.
 
I often wonder where the incorrect notion or idea comes from that a bullet traveling too fast will not expand.

In this case for some reason this bullet didnt expand. One would think since the shape didnt change much it would have acted like a fmj
The faster and harder the bullets hits the more force is applied to the bullet. A bullet designed to expand should expand more violently the faster it hits
 
GMX are really hard alloys and only expand under high velocity ... So, the right caliber and the right numbers and you're performance will be good, otherwise, not at all.

GMX are made with gilding metal. Same as bullet jackets. 95% copper and 5% zinc. Whereas TSX bullets are 100% copper. They should be shot with a bit of oomph. I dont use them in average power guns. Pretty much magnums to ensure a high impact velocity.
 
Never used a GMX. When I want a monometal, I've always gone with Barnes. Haven't seen a warp 9 failure with a Barnes like Dogleg posted. That's not confidence inspiring. Obviously a defective bullet / lot #. Surprised it was recovered, with such a minimal frontal area. What was the details on the shot Dogleg? If you don't mind typing more than one sentence
 
Ive seen enough barnes bullets in 30 cal and below fail and found 2 bears by shear luck that were hit with them.
No petals left and a caliber size shank inside the rib cage and neck. Both were found along ways from where shot and no major bones hit. Both 180gr tsx factory fodder 300wm ammo.
In 25 cal in mud sand water newsprint and a deer carcass every bullet shed all petals within the first several inches
 
Im hoping for better results with the gmx. I have some deer shoulders and a cow leg bone and some 1" pine boards to shoot thru. Just need to buy some 4l water jugs and get a nice calm day thats not 100+ degrees
 
Never used a GMX. When I want a monometal, I've always gone with Barnes. Haven't seen a warp 9 failure with a Barnes like Dogleg posted. That's not confidence inspiring. Obviously a defective bullet / lot #. Surprised it was recovered, with such a minimal frontal area. What was the details on the shot Dogleg? If you don't mind typing more than one sentence
My thoughts also, looks exactly like ones I recover come spring out of my melting snowbank berm. Amazing that something that heavy, traveling that fast, in that condition would not fully penetrate pretty much any game animal around and be able to be recovered. Wow.
 
My thoughts also, looks exactly like ones I recover come spring out of my melting snowbank berm. Amazing that something that heavy, traveling that fast, in that condition would not fully penetrate pretty much any game animal around and be able to be recovered. Wow.

Wait til you start recovering .375, 416 and 458 caliber bullets then you can really be amazed. That 139 GMX came out of a moose. Moose hide makes a fair to middlin' bullet trap.

A spire point that doesn't expand will usually tumble. When a bullet tumbles, all bets are off.
 
It was not a small caliber but it was moving fast, I had a 375 ruger gmx grenade on a yogi at close range. Punched a football sized exit hole and left shrapnel everywhere.

Just get some a-frames, they don't fail.
 
It was not a small caliber but it was moving fast, I had a 375 ruger gmx grenade on a yogi at close range. Punched a football sized exit hole and left shrapnel everywhere.

Just get some a-frames, they don't fail.
A 250gr monometal bullet that grenades and leaves shrapnel everywhere?
 
Have used the Hornady Interbonds for many years, accurate with good results.
Good thread as I have been considering trying the GMX for this years hunt.
The 308 165gr Interbond & GMX print near identical, easy transition.
 
Ive been using monometals for the last couple seasons, both GMX and Barnes and I love em. I punch out the shoulders when I can but in the lungs work great too, nothing has been a track job its all been DRT. Only recovered one and it was a photo perfect mushroom.
 
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