Originally Posted by nyrifleman
Originally Posted by one horn
IMR-7828 would be my starting point. I found RS magnum to be spikey (another techy word) in my current .264. This baffled me since it is such a slow burner in most cartridges. 7828 came to pressure gradually with no surprises. Accuracy was good with both.


I worked up to 65.5 7828SSC this weekend with the 140 Accubond. Velocity was just over 3200fps, accuracy was sub MOA.
WHOA!!!!!!!!!!!!!!! Tried 64.0grns of 7828SSC and this girl shot a .569 four shot group @ 100yrds WILL verify this load and proceed up to 65.5 to see what she does, battery on chrono died on me hopefully she's running close or over 3150fps.........if so I'm done!!!!!!!!!!