Re: 240 weatherby twist rate
I have a custom .240 Wby with a 28",9 twist barrel, and I shoot a 105gr bullet at 3380 fps. The load is 52 gr of RL22, which is a max load for this combination. Accuracy is astounding as it has shot numerous .0" groups at 100 yds. The rifle has never had anything but the 105-107 grain bullets through it as it was built as a long range varmint and deer rifle. If you are building your rifle for long range application, then I suggest you use the 9 twist barrel as you will be able to shoot the 87-107 grain bullets. Not sure I would use the Berger on big northern whitetails, but that's your call...