CCI #34 Primers in 300 Win Mag

[Shumba1]

Picked up some CCI #34 Primers. Was thinking about using these to load up in my 300 Win Mag for practice / range rounds, and saving my Federal Match Large Rifle Magnum Primers for loading up my hunting rounds. Any experience using the CCI #34 in the 300 Win Mag? I understand they are the equivalent of a LRM primer, but listed for use in the 7.62 for more reliable ignition of ball powders or in cold climate, while also being a little harder to ignite (avoid slam fires in a semi-auto). My 300 WM is a Sako 85.
Thanks!

 

[Lefty7mmstw]

they are cci 250's with a mil-spec cup- I use the 41's and the cci small rifle mag. interchangeably ... shoot them... they will possibly be a bit sootier than the 215's and they are actually a touch milder primer than a 215, but for most powders you probably won't notice... work up the charge as usual of course.