Re: .243 twist...... is 1:10 o.k.??
I have a 6mm Remington in 1:10 twist. It handles 95gr VLDs just fine and 100gr Remington corelocks work well too. With the 95gr Beger VLDs, I shot a 199 out of 200 in a 600yd F-class shoot, and that is out of a 26" barrel hunting rifle. So, 1:10 is fine unless you plan to shoot comps out to or past 1000yds, IMO.