I can understand your opinion & you're welcome to it. Fast & flat isn't much of a fad in my opinion (& we know what those are worth
). The ultra mags came out a long time ago & are going strong, the 26 is in essence, the 6.5 ultra mag. Benefits? Fastest, flattest shooting, hardest hitting 6.5 on the commerical market with factory ammo available. The only caveat I see, again in my own opinion, is that Nosler completely wiffed on bullet selection. This should have been offered with the 140 accu-bomb & NOT the 129. By utilizing bullets of higher weight, the overall bore life
should be increased.
Is it for everyone? no. Neither are Ferraris
I think the 160 Matrix will be THE bullet of choice in the 26 Nosler (I understand you aren't referencing it specifically for that cartridge here). Long range smackdown should be outstanding at the speed possible in the Nosler case; again raising the bar of 6.5 performance.
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