ok guys, I placed an order a while back with a cowboy action shooter who orders quite a bit of reloading components, but apparently he's not up on rifle components... I watched him write my order on the list with the rest of the group list, but instead of BR2's I got CCI no.34 military primers, (at least I didn't have to give BR2 prices for them...) but more to the point.... After trying to find out about these primers I decided to load down 5% and see what kind of velocities I'd get... so far they aren't very different from 210M's but the velocities vary more.
My normal load is as follows, through a Kiser built Rem 700 with 26" Benchmark barrel
41.7g H4350
140 berger hybrids
lapua brass
Fed 210M
avg. 2860fps @ 12ft
I started these CCI's (according to info I found they are magnum primers, or similar at least?) out at 37.5gr of 4350 just to be safe, and used some left over 130 VLDs seated to 2.010 to ogive... it was 38 and gusts to 15mph today so I only shot four seperate loads at 100yds to check for pressure, but these primers weren't nearly as hot as expected..
37.5- avg 2530fps es 27 w/.3 vertical (first three groups were about 3/4 inch wide stringing due to wind)
38.0- avg 2582fps es 18 w/.42 vertical
38.5- avg 2624fps es 31 w/.28 vertical
39.0- avg 2671fps es 24 w/.22 vertical (wind settled, was a pretty clean one hole group)
when it warms up and actually starts acting like spring I'll load up some for a new ladder test and see how these primers act with an appropriate amount of powder, on the bright side I did find a very nice reduced recoil load... haha