155 grain

Ollie2344

Member
Can any one give me info on the best powder and primers to use with lapua casses and 155 grain scenar or 150 grain mega to use with 20 inch barrel with 1/10 pitch
 
Lovex 2520 is awesome powder with 155gr scenar at 2,830 oal,45.5 grains will give you in excess of 2900fps from a 26 inch barrel, work up, I went back down half a grain and tested, I didnt see any difference so I stuck with 45grs
 
If you have some N150, Varget, or RL15, start at 44.5 grains and work up cautiously to 47.0, using Federal GM210M or CCI BR2 primers. If you change from Lapua to a heavier brass, like Remington or military, you must start lower and cannot go that high. 2.850" COAL, because the bullet is a bit more sleek. Sweet spots should be around

45.0 to 46.2 gr Varget
45.0 to 46.2 gr RL-15
44.0 to 45.0 gr IMR 4064
43.5 to 44.7 gr N150
Velocities for all will be above 2,950 fps for 26 inch barrels at the upper charges.
 
Let us know what powder and primers you can find, and how some of your loads work out.
A 20-inch barrel .308 does not lose much velocity to a 24-inch, so you should have good speeds.
 
I'll second Lovex 2520 as giving very good results though I would say that with a 20" barrel such as the one I have you will get a lot of noise and muzzle flash. I will also endorse TR140 and N140 these too will give good results. Lovex and TR140 are also inexpensive.
 
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