308 Norma mag
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308Norma I have owned at least half a dozen 308 Norma rifles. Still have 3. The throats can vary quite a bit and the maximum charge can vary as much as 3 or 4 grs of powder from one rifle to another. For that reason I am reluctant to just throw out a powder charge and have someone use it without working up from a safe starting load. What I will say is IMR 4350 and IMR 4831 and RL19 and RL22 are very good powders in the 308 N. A couple rifles would shoot the 150 gr bullets quite well while most prefer 165 gr and heavier bullets. Every 308 N I've had shot the 180 and 200 gr bullets best. 4350 & RL19 are better with the 150 &165. 4831 & RL22 are better with the heavier bullets. While the lighter bullets start out pretty fast a 200 gr spitzer gives up very little in trajectory and hits much harder @ 300 +yds than lighter bullets.
I have 5 308 Norma Magnum rifles at present, and the post above about varying charges is very true.
But I have loaded mostly Norma MRP [original Norma Powder for this cartridge.] in my 308 NM rifles.
My "fastest" rifle, a custom on an M17 action, gives 3100 fps and pennies with 71.5 grains of MRP. My
"slowest" rifle requires 76 grains to accomplish the same velocities.
One of my M81 Classics likes the 200 Partition and Reloder 25 best.
My Husqvarna shoots fastest with MRP, but slightly more accurate with RL 22.
I have had good success with IMR 7828 as well. Regards, D.
But I have loaded mostly Norma MRP [original Norma Powder for this cartridge.] in my 308 NM rifles.
My "fastest" rifle, a custom on an M17 action, gives 3100 fps and pennies with 71.5 grains of MRP. My
"slowest" rifle requires 76 grains to accomplish the same velocities.
One of my M81 Classics likes the 200 Partition and Reloder 25 best.
My Husqvarna shoots fastest with MRP, but slightly more accurate with RL 22.
I have had good success with IMR 7828 as well. Regards, D.
The above mentioned M81 "Classic" has shown a preference for Reloder 25 with the 200 Partition [or Accubond]
78 grains is the magic load in this rifle with either bullet, yielding close to 3000 fps and sub-moa accuracy. Interestingly,
the Partition is slightly more accurate than is the Accubond, and the point of impact at 100 yards is about 1½" apart.
This is a lightly compressed load, and should be approached from below. H1000 also has shown some promise with the 200
grain bullets, but I have not tested it enough to make suggestions. D.
78 grains is the magic load in this rifle with either bullet, yielding close to 3000 fps and sub-moa accuracy. Interestingly,
the Partition is slightly more accurate than is the Accubond, and the point of impact at 100 yards is about 1½" apart.
This is a lightly compressed load, and should be approached from below. H1000 also has shown some promise with the 200
grain bullets, but I have not tested it enough to make suggestions. D.
