stepped into a remington 7mm RUM. sendora stainless. looking to shoot long range and do i stay with 7mm or upgrade to 300. was looking at the 180g berger for 7mm haven't got to shoot yet but gathering parts, cha ching on the wallet. thinking 1000 plus on yardage. new to this sport and really like the tech stuff. Need to get out and start shooting and making it happen soon.