I was running low on Federal GM210M primers (stupid stupid!) and the local dealers were out of stock also, so I tried a packet of the CCI Bench Rest primers in my 7mm08.(Been using Federals since day one, about 15years ago and figured if it aint broke , dont fix it!) I loaded 30 rounds, 20 with the Federals and 10 with the CCI primers, keeping the rest on the load identical. Shot 2 10 shot groups at 200 meters with 2 minutes cooling time between shots, one group with CCI and another with the Federals. I found the the CCI bench rest primers gave me a tighter group than the Federals, about 1.4 inches 10 shot group with the CCI and at 1.9 inches with Federal at 200 meters(219 yds) Is this the norm, or just luck? One cannot really form an opinion from just 20 shots, So I'm asking for your opinions please. So which primers do I go for?