My gun I’ve been using the past few years is a 338 Lapua coming in around 13lbs loaded and with a bipod. I have complete and utter confidence in it, and I prefer the weight when actually shooting. My shoulders definitely are sore by the end of a good day hiking around. Can only switch things around so much before everything is sore! I think that you can have a gun that is too light. 9-10lbs all done up is a good range to try and shoot for I think.