Still a .338 at 2700+ yards with two concecutive one shot kills - I could beleive one center mass shot but two? - sounds like a B.S. story to me!
Well, the article said he had a spotter, so if they’re a liar, there’s more than one here.
I don’t doubt that it is difficult - but I think it is possible. The .338 Lapua is still supersonic (barely) at that range...
As for repeatability: I think it is within the realm of possibility. The rifle in question is capable of half-MOA groups or better. There’s some ferociously accurate rifles out there now. The Intl’ Benchrest Light Rifle category record set in 2007 was under 1.5” at 1000 yards with a .338 Lapua necked down to .30. For those who want to pay up for the quality, it is a heck of a time to be a rifleman...