Re: 243 ackley twist advice.
If you want to shoot the 95 Berger you should go faster than a 1-10 and make sure you can reach the lands. Being able to reach the lands with the 95 Berger will shove the long 105s way down in the case and when you want to stretch the gun out to 600 yards with a big 100 grain bullet you are going to be short on velocity because of the short throat meaning a reduced case capacity.
I burned two tanks of gas to get a box of 95 grain bergers before a match only to find that the freebore and the 1-10 twist would not stabilize them. They were completely sideways at only 50 yds and I could not find the paper at 100. JB1000BR got a free box of bullets off of that. All I got was an education in bullet design and barrel twist.
If it was me, just shooting at deer, which is what I mainly do, then the 1-10 is great for deer bullets. If I was going to double up and try to shoot the 95 bergers and Big A-Max's plus deer bullets then I would go to a 1-9 or 8 twist and be very particular about the throat length.
The Smokin Fur Rifle Club