Re: 300 win mag or 7mm stw For long range shooting ?
That my friend is a tough one.
I am going to want to build either of the 2 cartridges when the time comes. For out to 1K up to the size of elk, either will work fine.
I think ballistically, the 7mm might drop less, and drift less. However, the 300 "might" hit harder.
Its really a tough choice, in the STW I would shoot nothing but the 180g VLD at around 3000fps. With almost a .7 BC, that would make for one the best Long range deer rifles I could ever think of. Still have more then enough ummphhh to take elk and bears to.
In the 300 WM, I would shoot either the 190-210g VLD bullets. They might start out slower and with a little lower BC, but the little added bullet weight makes me a little happier on elk and bears.
To me, either are a great round, perfect for 1K shooting. I would be hard pressed to say ones better then the other.