Hi guys. I have been shooting 140 grain sst out of my 270. Accuracy has been good when i do my part. I have been reading mixed reviews about the sst bullets though. Thus is primarily my moose hunting rifle. Have any of you guys used the GMX bullets in a 270, if so what weight and how did they preform? I think my sst are running in the range of 2700 to 2800 fps and i would look to drive the GMX at about the same speed. Would the 130 grain GMX be a decent bullet for moose or should i stick with 140 or 150 grain. All shots would likely be under 150 or 200 yards. Thanks guys
270 and GMX
- Thread starter Jesse_L_B
- Start date
The highest hole on the left was my first shot, then I stacked the three together. Then I got excited and pulled the last one. Stainless rifle is 270 and the other is my suped up axis in 223. It shoots 55 grain vmax like laser beams at around 3100 fps.
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I don't own/shoot a 270 but I have shot the GMX's in my 6.5 Creed (Hornady 120 grain factory loads).
I was going to use my Creed for Moose with the 120 GMX's until I picked up a Weatherby VGII chambered in 7.08 Rem and "that" became my moose rifle.
So, would I use the 270 with a 130 grain GMX for moose - absolutely. The GMX can be loaded with the same data as "regular bullets" (according to Hornady, because it's gliding metal and not all copper), plus it retains most of it's weight on impact so it will retain the same weight as a cup and core bullet weighing 150 grains (or there abouts).
And why I would go with the lower weight bullet is because the mono's, including the GMX expand better the higher the velocity. So if you are shooting in non-magnum calibers I would want all the velocity I could get even if the bullet is generally considered "a little light".
If you have been getting 2700-2800 with a 140 SST, you should be able to do at least that, plus a little more with a 130 GMX.
I was going to use my Creed for Moose with the 120 GMX's until I picked up a Weatherby VGII chambered in 7.08 Rem and "that" became my moose rifle.
So, would I use the 270 with a 130 grain GMX for moose - absolutely. The GMX can be loaded with the same data as "regular bullets" (according to Hornady, because it's gliding metal and not all copper), plus it retains most of it's weight on impact so it will retain the same weight as a cup and core bullet weighing 150 grains (or there abouts).
And why I would go with the lower weight bullet is because the mono's, including the GMX expand better the higher the velocity. So if you are shooting in non-magnum calibers I would want all the velocity I could get even if the bullet is generally considered "a little light".
If you have been getting 2700-2800 with a 140 SST, you should be able to do at least that, plus a little more with a 130 GMX.
They say it (and most of the mono's) will "expand" down to 1800 but they only look like the tip got mashed a little.
With the GMX I was personally looking for an "impact velocity" of somewhere in the 2400 range or better - so with the Creed that is out to 300 yards - further than I would shoot.
You should be able to load @ 2900 (muzzle) easily with a 130 grain and still be packing close to 2400 out at 300 yards as well.
Anything closer than that (except uber-close) and the bullet will shine.
With the GMX I was personally looking for an "impact velocity" of somewhere in the 2400 range or better - so with the Creed that is out to 300 yards - further than I would shoot.
You should be able to load @ 2900 (muzzle) easily with a 130 grain and still be packing close to 2400 out at 300 yards as well.
Anything closer than that (except uber-close) and the bullet will shine.
As an aside, you can often load down a bullet size or two due to the fact that monolithic bullets retain near all of their weight on impact.
Case and point, I used to shoot with 165gr traditional cup & core bullets out of my .30-06 with about 70% retained weight of the projectile fragments. I'm now loading 150gr monolithic GMX and getting 99% retained weight of the projectile. More retained weight, more transfer of energy to the target. I think you'll do fine with a 130gr GMX in .270 for moose, provided shot placememt is good.
Case and point, I used to shoot with 165gr traditional cup & core bullets out of my .30-06 with about 70% retained weight of the projectile fragments. I'm now loading 150gr monolithic GMX and getting 99% retained weight of the projectile. More retained weight, more transfer of energy to the target. I think you'll do fine with a 130gr GMX in .270 for moose, provided shot placememt is good.
Awesome. Thanks for the info. How do you think they would preform between 50 and 75 yards? Most of the watches we sit on are under 100 yards. We have a couple I like where you can stretch out to 150 or 200. I have always been a 30 cal guy for moose hunting but got a good deal on this 270 so figure I want to give it a whirl. I'm just unsure of what bullets would be ideal for me.
