I expect it will be sometime before we see them, especially on this side of the world
By then they may well be obsolete except possibly for a niche market to the LR F class boys & shooters with blinkers on that are extremely reluctant to embrace change.
I say this because of improved muzzle brake designs that make even the biggest 338s etc far more manageable in light weight hunting rifles.
Also the 375 has taken over the higher ground in the LR performance stakes making even the biggest 338 look fairly average.
The bigger bore size means a quantum leap forward in barrel life, especially when coupled with much less powder burnt to achieve better ballistics.
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