I just bought a remington 700sps in 300wsm and when i load all 3 catridges into the magazine it fails to fully chamber the first round (gets stuck on shoulder) how can i fix this? It fails about 90% of the time but when i only load 2 into the magazine it fails about 60% of the time but it shouldnt fail at all right? any help would be much appreciated. P.S. would nickel cases offer any advantage with this issue? Below is a photo of my new hunting rifle after 12 years of shooting a 270 winchester.