Re: 243 question
I have a Savage 12 243 with a 26 in 9.25 twist barrel. I have only shot antelope with it so far but the 95 gr Berger's definitely do a number on them out to 600 yards. I have shot several groups at 200 yards that measured 3/4 inch with my factory Savage. If you get an 8 twist you can shoot up to the 105 gr berger's and use them for everything.
If I every shoot this barrel out I will probably go with a 28 in barrel with an 8 twist.
Hope this helps.