Yes, but as mentioned above probably not enough to matter. Lubrication, firing schedule, gas system tuning, and suppression probably affect it just as much if not more.
Looking at my guns with a bore scope, the douglas 18" spr barrel ( 110 rounds, almost all suppressed, all 77gr heavy reloads) even under slow fire is taking more of a beating to the gas port than expected:
This is a LaRue 16" lightweight barrel with 1400 rounds (much faster fire, 99% .223 pressure reloads) is doing better even though the port is 2" closer:
Maybe not the most instructive comparison, as I do not know what LaRue's barrel steel is.
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