TexasCHLforum.com

I find these results to be very interesting, but I'm still not completely convinced for my own situation.

I would like to see the same test with all-milspec rifles, or at least the proverbial "Tier 1" type rifle that has stronger steel parts (barrel) when compared with the Bushmaster and Spikes used in the test.

From my understanding, 4150 steel (Colt, BCM, Noveske) is FAR superior to the 4140 steel used by the tested rifles in the example provided (sans the hk416). I would guess that the difference in steel quality could significantly affect the results in wear and erosion rates.

That being said, Bushmaster is popular among novice and amateur shooters, so the results are conducive to the majority of AR shooters.

I still shoot steel case with great non-scientific results.