Master Blaster
Member
I'm currently making up 100 or so .308 rounds for a range trip next weekend.
My accuracy load so far has been 43 grains of IMR 4064 under a Sierra 168 grain HPBTMK. CCI 200 primer, and lake city once fired case. I was able to produce a 10 shot .78" group on a very windy day last time out, and a bunch of .5" 5 shot groups.
I have two loading manuals plus the data from the powder manufacturer.
So yesterday in the interest of getting additional data besides my four sources, I called Sierra's tech line for data. For 4064 they had a start load of 37.8, and a max load of 43.4 gr.
I also asked for Varget data for the same bullet starting load 38 gr. max 43.6 gr. This is using a fed 210 match primer.
The thing is that all 3 of my other load data sources start around 41 or 42 grains and go up to about 46 grains for both powders.
Other sources are Lyman 49th, Speer #13, and Hodgdon or IMR data.
Are all these other folks besides Sierra publishing unsafe data??????
Do you folks have a favorite load for .308? Please post it.
I am shooting a Savage LE II 26" barrel.
Thanks
My accuracy load so far has been 43 grains of IMR 4064 under a Sierra 168 grain HPBTMK. CCI 200 primer, and lake city once fired case. I was able to produce a 10 shot .78" group on a very windy day last time out, and a bunch of .5" 5 shot groups.
I have two loading manuals plus the data from the powder manufacturer.
So yesterday in the interest of getting additional data besides my four sources, I called Sierra's tech line for data. For 4064 they had a start load of 37.8, and a max load of 43.4 gr.
I also asked for Varget data for the same bullet starting load 38 gr. max 43.6 gr. This is using a fed 210 match primer.
The thing is that all 3 of my other load data sources start around 41 or 42 grains and go up to about 46 grains for both powders.
Other sources are Lyman 49th, Speer #13, and Hodgdon or IMR data.
Are all these other folks besides Sierra publishing unsafe data??????
Do you folks have a favorite load for .308? Please post it.
I am shooting a Savage LE II 26" barrel.
Thanks