Re: Ballistic coefficient and velocity for SW 175gr.
http://www.snipershide.com/forum/ubbthreads.php?ubb=showflat&Number=1998987
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: MikeSWammo</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: cajunshooter</div><div class="ubbcode-body">Mike
What velocity are you getting with your 175 in 308
I've got a 20" sps looking for a good load.
What are you thoughts of using the 155s
I've got a 1 in 10 twist </div></div>
Our 19" test barrel is shooting 2585 and the 24" is shooting 2648. I would expect you to get just under 2600 fps in your 20 SPS.
As for using the 155s, I guess it would depend on your application, and preference. They have a bc close to the 175s, and are about 200-250 fps faster. However, they appear to be more sensitive to wind.
We still have some of both in stock at the SH price. Also, they are available with either large or small primer Lapua brass.
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Variable <span style="text-decoration: line-through">G7</span> G1 BC for 175 SMK
.505 for 2800fps
.496 for 1800fps - 2800fps
.485 for 0 - 1800fps