Originally Posted by Coyote_Hunter


Starman -

I did muff the energy for the 168g LRAB. Not sure where I got 2108fpe but the correct number per my calculator is 1882fpe.

I'm using 7000 feet in altitude since we hunt elk from about 6200 to 10,000 feet.



well I ran the numbers again at your specified 7000ft alt.

http://www.shooterscalculator.com/ballistic-trajectory-chart.php?t=c320f2e4

result was:
150 LRAB @600yd 2224/1647
168 LRAB @600yd 2367/2090

175 LRAB 2800mv @600yd 2184/1854 (7000ft alt.)
(posted for folks who have faster twist than a factory 7mag)


Originally Posted by Coyote_Hunter


The 175 LRAB likely requires a much faster twist than my 9.5 7mm RM. A note form Hornady a couple days ago recommended
10 for their 150g ELD-X, 9.5 for the 162g and 8.5 for the 175g.


Nosler use 9.0" twist for their test rifle and 175 LRAB.
Barnes recommend minimum 8.0" for their mono-metal 175


-Bulletproof and Waterproof don't mean Idiotproof.