Ok, I received my Sierra 5th edition manual from midway today. I have worked up a load for my .308 rifle that is I have found is the most accurate in my rifle.
Sierra MK 168gr hpbt
43.8gr Rel 15
Lapua brass
CCI BR LR primers
I worked this load up over about 6 months of trying literally hundreds of rounds of various combinations. I can shoot 2.5" groups consistently at 300 yards with this, and I have several hundred rounds loaded with this load.
The alliant website shows a max charge of 45gr with a speer 168gr hpgt and this is what I based the max load on. I also am under max listed in the Lee manual and my Speer manual.
I bought the sierra manual because I find myself using mostly sierra bullets. I see zero pressure signs on the cases, no flattened primers, and these loads chrony right around 2600fps.
The Sierra manual list max DO NOT EXCEED loads at 43.6gr for my exact combination
I have tried the 43.6 max listed load and it is good, just not as good in my rifle as the .2 extra grains. For the record, it is a bolt action rifle and not a semi-auto gas rifle.
Should I be concerned? I am under the powder manufacturers listed max. Does the sierra vs speer brand of bullet make THAT much difference in a max load or is this a case of slightly lower max listed loads in a newer manual?
Thanks,
madd0c
Sierra MK 168gr hpbt
43.8gr Rel 15
Lapua brass
CCI BR LR primers
I worked this load up over about 6 months of trying literally hundreds of rounds of various combinations. I can shoot 2.5" groups consistently at 300 yards with this, and I have several hundred rounds loaded with this load.
The alliant website shows a max charge of 45gr with a speer 168gr hpgt and this is what I based the max load on. I also am under max listed in the Lee manual and my Speer manual.
I bought the sierra manual because I find myself using mostly sierra bullets. I see zero pressure signs on the cases, no flattened primers, and these loads chrony right around 2600fps.
The Sierra manual list max DO NOT EXCEED loads at 43.6gr for my exact combination
I have tried the 43.6 max listed load and it is good, just not as good in my rifle as the .2 extra grains. For the record, it is a bolt action rifle and not a semi-auto gas rifle.
Should I be concerned? I am under the powder manufacturers listed max. Does the sierra vs speer brand of bullet make THAT much difference in a max load or is this a case of slightly lower max listed loads in a newer manual?
Thanks,
madd0c