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What wears out a ar15 barrel more? 55 grain m193 or this hornady frontier 75 grain BTHP? If you are shooting it from a 1:7 twist 16 inch barrel? — 1 Answer

by Charlie, from TX, United States Asked on August 23, 2022

Name Hornady Frontier 5.56x45mm NATO 75 grain Boat Tail Hollow Point (BTHP) Brass Centerfire Rifle Ammunition (4.6)
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Answered by Hunter, Gear Expert, from OH, United States, on September 02, 2022

On average the barrel life of an AR15 barrel is about 20000 rounds. The difference in barrel wear between the two bullets you mentioned are not going to be that noticeable. I recommend selecting the ammo that shoots the best out of your gun and sticking with that.

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Last updated 2025-11-12 UTC.