I was just about to start on my load development for my new 110 FCP HSP .338 Lapua Magnum and I realized that I have the wrong primers! What I was going to load with was the Federal Gold Medal Match Large Magnum Rifle primers (GM215M). But I realized that my entire case of 1,000 is GM210M, the same Match primers but for non Magnum. I remember now when I was developing my 300 Win Mag load, the guy at Georgia Arms (where I buy most of my components) said that the Match grade primers (GM210M) should work for my 300 Win Mag and H1000. I have gone through about 500 rounds so far of my 300 Mag with those primers and I'm very happy with the load and my accuracy. Course it was 10-15 years ago that the GA Arms guy convinced me to try them and I completely forgot about it. I hadn't bought any primers for my 338 LM load, because in my head I just figured I had the GM215M primers, arg! Has anyone used the GM210M primers for 338 Lapua Magnum loads? I ask, because all of my local contacts are out of these primers and it will be weeks before they get any (if that) and all of the online stores like Wideners will take weeks themselves to get caught up on their back log (plus the extra hazardous freight tax). I can wait I guess, but I have the whole week of Christmas off and was hoping to finalize my load and get doing some Long Range shooting. Here's my load so far: New Lapua Brass Nosler AccuBond 300 grain Bullets Federal Gold Medal Match primers GM215M (though I have GM210M) And 5 varying loads of Hodgdon H1000 powder to find the best load 88.0 grains x 5 rounds 88.5 grains x 5 rounds 89.0 grains x 5 rounds 89.5 grains x 5 rounds 90.0 grains x 5 rounds What do you think?