.My powder of choice for my 243
1-8 twist broughton barrel
40.5gr H4831sc
Lapua brass. tight neck barrel .268, neck turned brass.275
105gr Berger VLD hunting
Federal MAtch primer
Never checked for speed. I was more intrested on precision. I actually started at 40.0gr of h4831sc with 5 round groups. I started with up in .1 increments. And at 40.5 it really stabalized the Bergers 105. Barely touching the lands. My 5 round group with that load produced a pea size hole,. And I'm printing 2"-3" groups at 600 yards which is the max distance at the local range..
How fast ?
And I'm using 40.6gr of h4831sc with Sierra 107. It seems to really like that load and the bullets are not touching the lands. Giving me almost identical results as the Bergers..
How fast ?
.Never checked for speed. I was more intrested on precision. I actually started at 40.0gr of h4831sc with 5 round groups. I started with up in .1 increments. And at 40.5 it really stabalized the Bergers 105. Barely touching the lands. My 5 round group with that load produced a pea size hole,. And I'm printing 2"-3" groups at 600 yards which is the max distance at the local range.