08-12-2022, 09:14 PM
The 115 has a lower expansion threshold, and better BC than 100 ttsx so for longer distances I would go with them.
IIRC exp threshold is supposedly down at ~1600 but I also re-rate that upwards like the ttsx, like you did - say 1800-1900. Plus I look for at least 1000 ke at impact.
For a 24" bolt action barrel you might get up to say 2660 ft/s MV, which would hit the 1000 ke level at 325 yds (my elev 500 msl so yours might go a bit farther - maybe 350-375 depending on elev). I get 2560 out of my 20" howa.
Barnes reports expansion data via a water tank so that differs from response to ballistic gel/flesh, etc.
IIRC exp threshold is supposedly down at ~1600 but I also re-rate that upwards like the ttsx, like you did - say 1800-1900. Plus I look for at least 1000 ke at impact.
For a 24" bolt action barrel you might get up to say 2660 ft/s MV, which would hit the 1000 ke level at 325 yds (my elev 500 msl so yours might go a bit farther - maybe 350-375 depending on elev). I get 2560 out of my 20" howa.
Barnes reports expansion data via a water tank so that differs from response to ballistic gel/flesh, etc.
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