Re: 243. Win first time loading
With the 87grn vmax, go 2.725" and start with 42grns of rl17 or H4350 with the WLR primers. Rl17 will give you the speed, likely over 3400 but H4350 will likely be more accurate and consistant and only about 50-70fps slower. This is with a 26" barrel of course. The remington 9 1/8 twist will nomally stabilize the 105 amaxs if you can find them, and they are a very good choice as well.