When I contacted Barnes about minimum impact velocity on 7mm bullets, they emailed back with the following info:
139 gr LRX 1400 fps
145 gr LRX 1600 fps
140 gr TSX/TTSX 1800 fps
I take that as confidence that so long as I’m around 2000 fps at impact velocity or more, it’ll do what it needs to do and maybe as low as 1800 for the LRX.
For the cartridges I use for hunting, that velocity is attainable further than I’d shoot
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