55gr. Lake City vs. 62gr. AE

[PhillyGlock23]

Hi,

This is a great site and there are a lot of very knowledgeable people here! After lots of research, I have a question:

Out of the two listed below, which would you rather have for an all-around range/self-defense round and why?

1. Lake City FMJ 55gr.
2. American Eagle FMJ 62gr.

For reference, it would be used in a Colt carbine.

Any and all feedback is appreciated!



(Mods, My apologies if this question should be in the Ammunition/Reloading section).

[Cameron]

M855 is 62gr not 55gr. Did you get the weights backwards?

If I could get my hands on Federal American Eagle 62gr FMJ-BT without the penetrator I would by several cases.

Between M855 62gr and Fed American Eagle 55gr I would take which ever is cheapest if I was shooting paper. For matches where steel targets are used don't shoot M855 of any other 62gr penetrator load.

Either round or weight will work in your Colt.

Cameron

[PhillyGlock23]

Hi Cameron,

Thanks for the quick response.

I went ahead and edited my original post: The Lake City ammo is 55gr., the AE is 62gr.

[Cameron]

I have had great results for the American Eagle 62gr. Very accurate and the 62gr FMJ works well will the multitude of sights calibrated for the M855 62gr military loads.

That said the Lake City 55gr loan is probably the XM193 which is another good load 55gr at 5.56NATO velocities.

If you have an optic set up for a certain weight go with that, otherwise buy which ever is cheapest between these two.

PM inbound.

Cameron

[Iraqgunz]

I like the AE 62gr. FMJ. Wish I knew where to get more.

Hi Cameron,

Thanks for the quick response.

I went ahead and edited my original post: The Lake City ammo is 55gr., the AE is 62gr.

[Zhukov]

Lake City 55gr is M193 and is a decent choice as long as you are aware of M193's shortcomings.

AE 62gr FMJ's fragmentation potential is unknown and I wouldn't use it until I saw some test results.

[Iraqgunz]

I am sure that it can't be any worse or better than M193 or M855. I worry more about putting rounds in the right spot which generally solves the problem.

Lake City 55gr is M193 and is a decent choice as long as you are aware of M193's shortcomings.

AE 62gr FMJ's fragmentation potential is unknown and I wouldn't use it until I saw some test results.

[rifleman2000]

55 grain M193 Ball (FMJ) is my choice, for cost mostly but it is also an effective self defense round.

It will shoot accurately in any barrel twist of modern AR15s, including 1:12, 1:9, and 1:7.

55 grain FMJ will fragment reliably at 2700 fps or more, depending on barrel length that is out to 100m (approximately). By fragment, the I meant the bullet comes apart as it is spinning, almost exploding (but no, it is not an 'exploding bullet'. But it can be very devestating. Good for self defense, within the range of house defense, very destructive to tissue.

The drawback (or additional plus) is that penetration is greatly reduced at the shorter ranges. When the bullet speed has dropped below fragmentation speed, it will stay together and provide more penetration when it impacts something (walls, obstacles, flesh). Damage is reduced accordingly.

Hope it helps!

[5pins]

I tried some of the AE 62gr in 2002. It is not the same as M-855. It’s loaded to .223 not 5.56. I got an average velocity of 2861fps out of a Colt 20in with a 1/7 twist. Compare that with the Winchester M-855 that I shot the same day with a velocity of 3010fps. Also the AE doesn’t have a steel tip. As a further comparison XM-193 got a velocity of 3168fps and Win Q3131A got 3105fps