The 120 gr Hornady GMX
Length: 1.399
G1 Coefficient: .450
Price: $33.49/50 ($0.67 ea)
Source: Midway USA
![[Image: attachment.php?attachmentid=8519]](http://www.65grendel.com/forum/attachment.php?attachmentid=8519)
This copper alloy 120 gr is the only LFP offered by Hornady in 0.264 caliber.
The load data I did with a 24 barrel achieved 2550 fps with N530, and Coyotetan achieved 2480 fps from a 20 barrel using IMR8208.
SneakyOne started a project years ago putting these on a lathe and making 90 95 gr versions. He still uses these light weight GMXs effectively on deer.
He provided me with some to test on gels. After hitting gel at 1696, the 90 gr GMX did not expand. But at 1825 fps, it expanded to 0.309 diameter. And just for fun, the one on the right is an 80 gr GMX after hitting the gel at 2979 fps.
![[Image: attachment.php?attachmentid=8520]](http://www.65grendel.com/forum/attachment.php?attachmentid=8520)
So I put the minimum velocity at 1800. Given a MV of 2400 fps, this gives the 120 gr GMX a Maximum Range of about 350 yds.
Length: 1.399
G1 Coefficient: .450
Price: $33.49/50 ($0.67 ea)
Source: Midway USA
This copper alloy 120 gr is the only LFP offered by Hornady in 0.264 caliber.
The load data I did with a 24 barrel achieved 2550 fps with N530, and Coyotetan achieved 2480 fps from a 20 barrel using IMR8208.
SneakyOne started a project years ago putting these on a lathe and making 90 95 gr versions. He still uses these light weight GMXs effectively on deer.
He provided me with some to test on gels. After hitting gel at 1696, the 90 gr GMX did not expand. But at 1825 fps, it expanded to 0.309 diameter. And just for fun, the one on the right is an 80 gr GMX after hitting the gel at 2979 fps.
So I put the minimum velocity at 1800. Given a MV of 2400 fps, this gives the 120 gr GMX a Maximum Range of about 350 yds.