nitesite
Member
I previously started a thread about my attempt to find a reload recipie for a friend which would closely duplicate the velocity and felt recoil of his chosen carry round, which is Cor-Bon's excellent 10mm DPX 155-grain ammunition utilizing the Barnes all-copper bullet. I posted my report in Reloading.
My friend and I both carry Glock 29s frequently. However, I prefer to follow the heavier/slower crowd when it comes to bullet selection. My chosen bullet has been the 180-grain Gold Dot and I normally use Georgia Arms new Shear Power Plus ammunition as my carry load.
As I mentioned in that previous thread, I chronographed his CorBon DPX 155-gr ammunition thru my Glock 29 prior to beginning load work-up. Amazingly, CorBon loads the 155-gr DPX bullet in both the .40S&W and the 10mm at the same published velocity (1200-fps). I measured their 10mm ammunition at an average 1138-fps thru the G29s 3.78" barrel. The consistency of this factory ammo was impressive at 17.21-fps ES and only 9.53-fps SD. The people at CorBon are to be commended for their quality standards.
This afternoon I had a little time, so I did a chronograph test of my heavier/slower Georgia Arms carry load, which states on the package a claimed 1150-fps. Now if CorBon says their 155-gr does 1200 feet-per-second and Georgia Arms says their 180-gr does 1150 (both from actual firearms and not test barrels) I fully expected to see my bigger/slower ammo of preference would chrono a bit under 1100 feet-per-second.
Boy Howdy was I ever surprised! Both loads were fired from the same gun. Both the G29 and ammunition were at room temperature, same elevation at 669' above sea level.
CorBon 155-gr DPX AV 1138.62 ES 17.23 SD 9.53
Georgia Arms 180 GD AV 1185.57 ES 16.96 SD 6.78
By the way, here's what a recovered 180-gr Gold Dot loaded by Georgia Arms looks like after being shot thru my G29 into gallon jugs of water. Remember that water is harder on bullet integrity than gelatin.
You may ask "What about accuracy?" Well, occasionally I can do accuracy testing (from a rest) just a few hundred yards from my house. If there hasn't been any recent rain I have access to a high dirt bank for a good backstop.
But when water is standing 50'-75' from the bank I can only do chronograph testing. And I am not sure what kind of accuracy, and from what distance, should be expected from a compact pistol.
Conclusions:
The CorBon 155-grain Barnes Bullet DPX 10mm load is a very consistent and light recoiling round with 100% weight retention and great expansion. CorBon obviously has tight control over their manufacturing process.
The Georgia Arms 180-grain Gold Dot 10mm load is a bit heavier on recoil but is very controllable which also has near 100% weight retention and also has expansion and round-to-round consistency that is truly impressive.
Best regards,
nitesite
My friend and I both carry Glock 29s frequently. However, I prefer to follow the heavier/slower crowd when it comes to bullet selection. My chosen bullet has been the 180-grain Gold Dot and I normally use Georgia Arms new Shear Power Plus ammunition as my carry load.
As I mentioned in that previous thread, I chronographed his CorBon DPX 155-gr ammunition thru my Glock 29 prior to beginning load work-up. Amazingly, CorBon loads the 155-gr DPX bullet in both the .40S&W and the 10mm at the same published velocity (1200-fps). I measured their 10mm ammunition at an average 1138-fps thru the G29s 3.78" barrel. The consistency of this factory ammo was impressive at 17.21-fps ES and only 9.53-fps SD. The people at CorBon are to be commended for their quality standards.
This afternoon I had a little time, so I did a chronograph test of my heavier/slower Georgia Arms carry load, which states on the package a claimed 1150-fps. Now if CorBon says their 155-gr does 1200 feet-per-second and Georgia Arms says their 180-gr does 1150 (both from actual firearms and not test barrels) I fully expected to see my bigger/slower ammo of preference would chrono a bit under 1100 feet-per-second.
Boy Howdy was I ever surprised! Both loads were fired from the same gun. Both the G29 and ammunition were at room temperature, same elevation at 669' above sea level.
CorBon 155-gr DPX AV 1138.62 ES 17.23 SD 9.53
Georgia Arms 180 GD AV 1185.57 ES 16.96 SD 6.78
By the way, here's what a recovered 180-gr Gold Dot loaded by Georgia Arms looks like after being shot thru my G29 into gallon jugs of water. Remember that water is harder on bullet integrity than gelatin.
You may ask "What about accuracy?" Well, occasionally I can do accuracy testing (from a rest) just a few hundred yards from my house. If there hasn't been any recent rain I have access to a high dirt bank for a good backstop.
But when water is standing 50'-75' from the bank I can only do chronograph testing. And I am not sure what kind of accuracy, and from what distance, should be expected from a compact pistol.
Conclusions:
The CorBon 155-grain Barnes Bullet DPX 10mm load is a very consistent and light recoiling round with 100% weight retention and great expansion. CorBon obviously has tight control over their manufacturing process.
The Georgia Arms 180-grain Gold Dot 10mm load is a bit heavier on recoil but is very controllable which also has near 100% weight retention and also has expansion and round-to-round consistency that is truly impressive.
Best regards,
nitesite
