Nice, it's always good when you get your rifle shooting like that Tikka, The velocity spread on the lehigh load is impressive are you preparing your brass any particular way? I was loading the 168 lehighs and could not get them to shoot to well went back to full thickness neck and annealed and the velocity came down to a reasonable spread. Shooting the 125BT today at 300y like you 2050fps, shot into 18inches of wet cardboard to see if it penciled through or not pleasantly surprised by the force of impact and the cavitation caused, on impact the 125BT only has about 550ft-lbs and about 1400fps so i wasn't sure if it would expand or not.In about 4inches the bullet opened up into a "wound" channel about the size of a beer bottle and fragmented with penetration the full 18inches.
Anyway good shooting thanks for posting any results, this is a versatile caliber when you know what it can do.
Cheers
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