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Joined: Sep 2019
Posts: 241
Campfire Member
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Campfire Member
Joined: Sep 2019
Posts: 241 |
I get 1 inch or better groups with Hornady 139 gr. GMX in factory Full Boar ammo in my 7-mm-08. Ruger American rifle.
If ifs and buts were like candy and nuts, it would be Christmas every day.
“The .30-06 is never a mistake.” - Col. Townsend Whelan
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Joined: Nov 2007
Posts: 4,902
Campfire Tracker
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Campfire Tracker
Joined: Nov 2007
Posts: 4,902 |
Mine like em best when seated .015” off the lands
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Joined: Mar 2017
Posts: 4,350
Campfire Tracker
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Campfire Tracker
Joined: Mar 2017
Posts: 4,350 |
Tried a box of factory GMX in a Rem 721 30.06 and was unimpressed.
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Joined: Apr 2019
Posts: 229
Campfire Member
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Campfire Member
Joined: Apr 2019
Posts: 229 |
Out of my rifles, the Superformance 243 80gr GMX shoots over two inches over five shots, 6.5 and 7-08 GMX group about one inch.
NRA lifetime member
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Joined: Jun 2015
Posts: 603
Campfire Regular
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Campfire Regular
Joined: Jun 2015
Posts: 603 |
I have only tried their .224 70gr sample in an otherwise very accurate 1:8" 22-250 and could not get them to group any better than 1,5" at 100 meters.
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Joined: Oct 2013
Posts: 244
Campfire Member
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Campfire Member
Joined: Oct 2013
Posts: 244 |
My only experience is with the 250gr in my 375 Renner. Just 3 shot groups, but one (and it could be the 1st, 2nd, or 3rd shot) was always 1 1/2 - 2" out no matter the powder load, the other two always next to each other. The 250 TTSX shoots sub 1" all day. Terry
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Joined: Feb 2005
Posts: 9,472
Campfire Outfitter
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Campfire Outfitter
Joined: Feb 2005
Posts: 9,472 |
I have one rifle that shoots GMX factory ammo OK. I have hand loaded them in several other rifles with no luck. Same story with Nosler E Tips. I've yet to find a gun that won't shoot TSX and latter Barnes well.
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Joined: Feb 2010
Posts: 3,842
Campfire Tracker
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Campfire Tracker
Joined: Feb 2010
Posts: 3,842 |
I seat 0.050" off, and they always shoot.
I've noticed they need a bigger jump than SSTs to shoot well. I'm at 0.030" but don't be surprised if you need more.
Quando omni flunkus moritati
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Joined: Oct 2008
Posts: 8,748
Campfire Outfitter
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Campfire Outfitter
Joined: Oct 2008
Posts: 8,748 |
The 185 .338 GMX has shot very well for me. TTSX (185 and 160) has shot excellent as well.
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Joined: Oct 2007
Posts: 5,468
Campfire Tracker
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Campfire Tracker
Joined: Oct 2007
Posts: 5,468 |
I never had much luck with them, hunting accurate but not really "tight" groups. 6.5 and 7mm.
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Joined: Jul 2001
Posts: 8,759
Campfire Outfitter
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Campfire Outfitter
Joined: Jul 2001
Posts: 8,759 |
I've never seen a TTSX that didn't shoot lights out with a max (or near max) charge and the bullet seated to the front of the first driving band. 243, 260, 7-08, 270, 30-06, 308, 338, 375 H&H.. So all grooves are seated in the neck? Yep, seat em deep, they shoot well so far in my rifles.
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Joined: May 2019
Posts: 447
Campfire Member
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Campfire Member
Joined: May 2019
Posts: 447 |
Bumping this for a little load development I'm about to do with some 165 grain .308 cal GMXs.
Caliber: .308 Win Propellant: Varget Starting charge: 42.0 grains Seating depth: .050" off the lands Brass: Winchester Primer: Federal 210
Sound logical for a 1:10 rifle?
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Joined: Feb 2004
Posts: 3,206
Campfire Tracker
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Campfire Tracker
Joined: Feb 2004
Posts: 3,206 |
The 165 Gr GMX Superformance ammo shot well out of my 300 WSM but I noticed earlier this month that Hornady has discontinued the GMX and replaced it with the new CX bullet. Unfortunately I don't see a 165 Gr Superformance load for the 300 WSM
https://www.hornady.com/bullets/cx#!/
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Joined: May 2019
Posts: 447
Campfire Member
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Campfire Member
Joined: May 2019
Posts: 447 |
The 165 Gr GMX Superformance ammo shot well out of my 300 WSM but I noticed earlier this month that Hornady has discontinued the GMX and replaced it with the new CX bullet. Unfortunately I don't see a 165 Gr Superformance load for the 300 WSM
https://www.hornady.com/bullets/cx#!/ Yeah saw that, I just have a .308 that has done well with factory GMX stuff so I want to try my hand at loading some. The additional benefit is that if I am able to successfully find a good load, you'll see me groveling in the classifieds for any 165 GMXs that anyone may have left over
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Joined: Sep 2009
Posts: 1,601
Campfire Regular
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Campfire Regular
Joined: Sep 2009
Posts: 1,601 |
Several years ago I traded for a tupperware stocked Savage 10 in 6.5 CM. For a $400 dollar rifle with a 3-9x40 scope it shot 120 grain GMX Superformance factory ammo into 1/2" 3 shot groups.
Never tried them in any other cal.
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