Re: Suppressed 308 / load development
Witch,
I shoot a lot of SS in deer culling. I have used some Lapua factoy stuff and it is nice. I wanted a load I could use W/O changing my zeros. After a lot of expirementing this is what I came up with.
13 Gr IMR 4227. Weighed.
I bore the flash holes to about 1/2 the size of the primers, Leave just enough rim to keep them from going in.
Fed 215 mag match primer.
200 grain subsonic lapua bullet with rebated rim.
Seat for about 2.5" length, if it will not jam. I will get more specific later if you wish.
Vel in 22" barrel with Surefire can is 1066 at 70 degrees.
Counter boreing the the flash holes does not incresase or decrease the velocity, it just makes it more uniform.
This load allows me to use my 300 yard zero with the 168 SMK with the same can. (44 grains IMR 4064 F210 match depth 3.022 Lapua case 173 grain weight)
POI is
25 .25" high
50 .25" high
75 1 ml low
100 2 ml low
125 3 ml low
150 4 ml low
175 5 ml low
200 6 ml low.
Very convienent for me. I just carry a small laser and hold out to 200 with SS and 800 with supersonic ammo. I dial past 800 and do not shoot SS past 200.
Shoots slightly higher w/o the can. I think about 1 ml at each range.
Hope this helps. PM if you need more detail. You do want the Mag primers for uniform velocity.
Good luck
