Hello everyone, got a ? i recently purchased a savage 110 fcp-k in 300 win mag and have reloaded about 100 rounds of differant loads and bullets and run threw it, very good accuracy, but i have noticed that the base right above the belt grows about .004-.006 is this normal? also they have a bright ring around the case just above the belt,i started re-loading them by full lenght resizing and noticed it was getting more prenounced, then i went to just neck sizing and it stayed about the same, most of these loads where about in the middle range on charges and are backed off the lands .010 so im not jaming it in the rifling,could it have a big chamber? anyone ran into this,thanks.