Circlehook

Comprehensive article here:

http://www.luckygunner.com/labs/bras...email#reliable

jbrooks

Very nice!

Thanks for the post!

JWB

1KPerDay

It certainly gave me pause. I have had no problems with TulAmmo in AR, Mini, or SCAR. However, I don't shoot 300/500/1K rounds back to back in the conditions of the test either.... more like 30 rounds or less over the course of a minute or two during a 3-gun stage, then the gun cools completely before the next run. I'm QUITE surprised how badly the barrels were damaged under the test conditions. I wonder what it is about the situation that creates such damage... whether it's heat or abrasion or both. Fascinating stuff.

Dredsen

when you take into account the crap that brown bear leaves in your gun, you gotta clean it out, and i bet you would see less wear.

firegrunt03

+ 1 for Federal ammo!!!

When i pulled the bullets here is what i found!!

Federal 100 rnd pack 55 grain FMJ .223
Federal brass
Average:OAL 2.192
Bullet wt. 54.82, 54.84, 54.70 grains.
Spherical/ball powder(???)
Ave. grains 26.44, 26.20, 26.30, 26.24

Federal 5.56 100 round pack
OAL 2.255
Lc brass annealed
27.90, 27.88,27.92 grains of
Spherical /ball powder
Sorry didnt weigh the bullets indiv

Federal GSM BHTP OAL 2.52
Ave grains powder 24.66,24.66, 24.72
69 grain bullet

Hope this helps.
And by the way at 42-49 degrees farenheight when barrel cools down quicker i guess
The groupings are so much better than at 52 degrees!!

Packing a 45

I only saw three barrels cut, did I miss something or are the holding back information. Seems odd. If there is no comparison with all the barrels involved. I say BS. If I have missed it in the thread forget you have seen this. Packing PS. Good Guns deserve better than cheep steel ammo

swagbrdr

Great article/test. It told me everything I already know...steel ammo sucks. It would pain me fire 10K rounds and not be able to reload any of the spent cases too.

4Quangs

While there, I read the article on .223 vs 5.56 ammo as well. http://www.luckygunner.com/labs/5-56-vs-223/#more-115

I'll bet much of that discussion applies to the .308 vs 7.62 as well.

slamfire1

I disagree with the authors in article text bubble:

If you read that report, the rust on the lacquered steel case ammunition was worse than the uncoated! Coating on steel cased ammunition is to reduce rust and to break the friction between the case and the chamber, something that the authors ignored in their next referenced report:


In the referenced report the Army had failures to extract with unlubricated cases but the lubricated cases extracted. Showing that even with brass cases, breaking the friction between case and chamber improves function.

The US Army developed teflon coating for experimental steel cases in the 1950's. At the time the cost of the steel cases and coatings were higher than brass cases so the whole experiment was abandoned. But considering how expensive brass is now, I wonder if the Army will be issuing steel case for 223 and 308 in the future.

Ash

The Warsaw Pact used steel for decades without problem - or at least the benefits outweighed the problems.

I prefer brass, but will shoot steel if needed. I'd be interested in trying Hornaday's steel offerings.

Daves762

Excellant. Thanks for the article.

RedRuger

Great article thanks. I didn't know bi metal jacketed bullets would wear your barrel that much faster than copper jacketed.

Ash

I don't know if it's the jackets or if its erosion from the powder or if it is a combination of both - probably the latter.