So this was my first time trying to develop a load for my old hunting rifle. I chose Reloder15, Speer 180gr btsp. Rifle is a 300savage99. I started at 39.0gr as per the manual, and shot one round +.2gr up to 42.4gr. Max recc load 43gr. I didnt have any signs of pressure or no sticking of the action altho this is not a bolt action so im not sure if the action would be sticky on over pressure? I shot over caldwell chrono, how much can i trust the veloctiy is close enough. I did get a tiny split on neck of the 2nd round i fired can i chalk that up to a defective brass no primer cratering etc? All others seemed good. i got two spots where the grouping was really good compared to the rest of the rounds. The two shot almost the exact same point of impact. Should i now load 10 rounds of say 40.4gr and 42.2gr. Then see if it groups well? I had another set of 125gr ballistic tips loaded as well but i got rained out.
