My Toy
Ultimate Member
When reloading for 223 Rem and 308 Win and using H335 or BL-C2 do you guys use magnum primers or std. primers? You can find some manuals that recommend magnum primers for these powders in these rounds. I talked to a tech at Sierra a couple of years ago specifically asking this primer question with respect to a 308 load consisting of 43.0 grs BL-C2, 168 gr Hornady BTHP, LC-85 case; I have been using CCI-200 primers and getting great accuracy out of my bolt gun and good accuracy out of a gas gun. The sierra tech told me they (Sierra) didn't think a magnum primer was necessary in trying to ignite that volume of powder in a 308 case.
Recently I tried that same load with CCI-250 primers. The velocity of the loads were only slightly higher over my chronograph and there were no adverse pressure signs. What I did notice was the accuracy out of my gas gun was a little better. I'm thinking this maybe was due to a little more uniform ignition with the magnum primer.
Also there is the thought that magnum primers with ball powders give better performance in cold temperatures.
What do MD Shooters with experience on this issue use?
Thanks.
Recently I tried that same load with CCI-250 primers. The velocity of the loads were only slightly higher over my chronograph and there were no adverse pressure signs. What I did notice was the accuracy out of my gas gun was a little better. I'm thinking this maybe was due to a little more uniform ignition with the magnum primer.
Also there is the thought that magnum primers with ball powders give better performance in cold temperatures.
What do MD Shooters with experience on this issue use?
Thanks.