Well I'm not as experienced as either of those two Jedi's Ebf but have spent many years shooting steel and I'd pick brake.
Even a 8lb 338 edge at 600 will settle enough with the brake to spot your own splash.
In saying that wouldn't a can on a 708 be enough to achieve what your asking, but then you have heat mirage....
The brake blast from the guy beside you will cause you issues but not your own brake blast.
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