I am doing some load testing on a model 12 savage and found 1 load so far that works well, but when I checked it with a crono I was surprised at the velosity I was getting (3450fps) and was wonder if this seems to fast for good barrel life or should I slow things down alittle. I am using 46gr. of IMR4831 powder and CCI BR2 primers this load is not a max load (Loading manual says 48.5gr. Max)