My son put together a Tactical 308 with a 1 in 12 twist. I have 1500 Sierra 155 Palma bullets on hand that I am not using in anything I am shooting at the moment. I am planning on loading them for his new gun. I would like to use powder I have on hand due to the problem getting powder at the moment, which eliminates Varget and RL15. I only have 1 pound of each, not enough to mess with. I do have AA2015, and 748 in large enough quantities to use.
Load development round one: Winchester Cases, CCI BR Primers, Sierra 155 MK. My Accurate Loading Manual Number ONE shows a maximum load of 41.5 grains of 2015 with a velocity of 2764 from a 24 Inch barrel.
My chronograph came up with a close average reading of 2742 from his 24 Inch barrel, with 40 fps deviation. Accuracy at 100 yards was not earth shattering. Possibly due to the velocity spread. No pressure signs at all. No cratering, or flattening of primers. This is my first use of CCI BR primers in years, I normally use Federal GMM. I am not sure how CCI BR primers react to pressure. My search of 155 loads shows lots of loads above book level using Varget & RL15 with velocitys way above the 2742 we are getting.
Is anyone using 2015 under a 155? What are your results? Maximum loads, etc. I was wondering if a little more powder might tighten up the spread a little.
I went to the Accurate web site to look for more or different data. I did not find 2015 listed at all for a 150/155 bullet.
With powder being hard to come by, I am just trying to work with what I have on hand.
I loaded 20 with Varget, and 20 with 748 to try this week.
Load development round one: Winchester Cases, CCI BR Primers, Sierra 155 MK. My Accurate Loading Manual Number ONE shows a maximum load of 41.5 grains of 2015 with a velocity of 2764 from a 24 Inch barrel.
My chronograph came up with a close average reading of 2742 from his 24 Inch barrel, with 40 fps deviation. Accuracy at 100 yards was not earth shattering. Possibly due to the velocity spread. No pressure signs at all. No cratering, or flattening of primers. This is my first use of CCI BR primers in years, I normally use Federal GMM. I am not sure how CCI BR primers react to pressure. My search of 155 loads shows lots of loads above book level using Varget & RL15 with velocitys way above the 2742 we are getting.
Is anyone using 2015 under a 155? What are your results? Maximum loads, etc. I was wondering if a little more powder might tighten up the spread a little.
I went to the Accurate web site to look for more or different data. I did not find 2015 listed at all for a 150/155 bullet.
With powder being hard to come by, I am just trying to work with what I have on hand.
I loaded 20 with Varget, and 20 with 748 to try this week.
