Originally Posted by Mr.Smith
I guess being the new boy doesn't warrant a reply. . . . . . .
Yes, it warrants a reply. I just don't own one, therefore can not give you an educated answer. However, I know there are some guys that use them on this sight. So hopefully they will chime in soon. Another LRH forum to post is the Varmint forum. Don't know if you have looked into it yet, but the 6mmbr.com has some very good info on the 243AI and some load data. That is about the best I can do for you. I know the heavier you go in bullet the slower you want to go in powder. For instance if you shoot the 105grn through 115, you want to look at powders such as IMR and H4350, IMR and H4831, I know I have seen some guys using as slow as H1000. I have a sneaking suspicion if you use RL17, you are going to get some awesome velocities with heavier weight bullets and good accuracy. Now granted these are on longer barrels than yours, so it gives a little more burn time.
I would say with your 80 to 100 grain bullets you want to use powders such as RL15, Varget, IMR 4064 and powders of the same or close to burn rate. You could probably even use IMR 4895. With all loads even if experimental you want to work up slowly in charge. For an Ackley Improved you can probably start at a grain below max of a normal 243 load and work up from there in 1 grain increments until you start noticing pressure signs. Not sure if they have the 243AI listed, but you may want to look at reloadersnest.com also.
Hope this helped some,
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