Re: 300RUM vs 30-378
Remington 700 stainless synthetic off the shelf rifle. First group with it at 750 yards was a little over 4 inches. 225 nosler accubonds at 3264 fps with RE-25 powder. It is an excellent rifle and a great elk rifle. I do not know how much it weighs. My 338-378's shoot this bullet on average close to 3450 fps.
Predictions are difficult, especially when they involve the future