Mag Primers in .308

[WThunter]

I had a guy tell me he uses Mag Primers with his .308 loads. He said it made a big difference in his accuracy. Does anyone do this? Does it really matter one way or the other?

I tried it with my 165gr Sierra load, and it turned out bad. I was getting fliers. My groups with 210 primer is 1.1" or so, but opened up to 2" or more with CCI 250 primers. Did it cause I ran out of primers one night. I tried it with 44gr, 45gr, and 46gr of Varget. All had fliers.

[Mark whiz]

The only time you might need to use mag primers in .308 is when using loads with ball powders like Win 748 or Hodgdon BL-C(2). I have found that I get slightly better accuracy when using mag primers with those two powders. But Standard primers are all you need for extruded powders like Varget, 4895, 4064, RL-15, etc.

[Vapodog]

I use mag primers in cases the size of .243 and larger when using ball powders and in one instance in a 6MM Remington actually increased my accuracy a bit. It's worth a try.....but it's not likely to be a panacea of good tidings....it's not likely to reduce 3" groups to under 1" or anything like that.....but try it if you wish.

[Troy R]

On my .308's I prefer the Fed 210m,if not that the CCI BR2's work good.