What is best way to make cases -> 338Lapua to 30-338Lapua ? Is it much harder work if you have ack imp chamber? Possible to do without fireforming? lightbulb
How about differences between "normal" vs Ack Imp chambers?? I know if i choose ack imp chamber its better to do fire/hydro forming. But how about basic 30-338 Lapua (Actually 300LapuaMagnum) is it possible neck to down only with sleeves??
Mine shoots 230's just fine in a 10 twist at 3350fps. I do have a 33" barrel though.
I haven't shot it much at long range. It will shoot around 1/2 moa with that load and I haven't really work with any other powders. A case of too many rifles and not enough time.
At 0 ft elevation you may want to run a 9.5 twist per Berger twist rate calculator but a little elevation and your good. I've been back and forth as well on a barrel do my 30-338 LAI, this is an excellent round to stress the heck out of jackets but their are some 240 gr bullets to shoot as well as some very good monos which would need twisted up.
If i can ask what is that load and powder? Do you have imp chamber or basic? Any problems with coppers/cleaning?