RedHawk357Mag
Member
Tried searching for the info on how to make use of this little critter called a Chronograph, and it has remained elusive. I get the jist of setting it up and what it does but not quite certain what I am looking for exactly. For instance I have decided to develop a 357 Mag load for two of my revolvers. The bullet is each Match and Magnum Missouri 158 gr LSWCBB. New Winchester brass. Powder is TiteGroup. Pwdr wt is 3.8, 4.0, 4.3, 4.5, 4.8, 5.0, 5.3, 5.5, 5.8, 6.0. I will switch to the Magnum bullet with the 4.8-6.0 gr wt loads. Planning on making 10 rnds per pwdr charge. Will check for pressure signs on all cartridges as well as look for leading in the gun. The test gun will be a Ruger RedHawk 357 Mag with reamed cylinder throats. Provided this will be successful I will rinse lather and repeat for the other revolver, a S&W 686-4. I plan on measuring CTC groups for each load. But what is mystifying me is this Chronograph data. SD ES and whatever other little abbreviations this wonder box can spit out or I can get MS Excel to tally for me. So what data do I use to develop "the load" for this RedHawk? And yes I did find the post where one person wrote "it is not uncommon for normally happy reloaders to develop ulcers shortly after purchasing a Chronograph" Thanks any insight offered