Re: 300 WSM Loads (Rookie Alert)
Skookum, do you understand the concept of starting low and working up?
Reloading manuals are good references but you will differences between them, sometimes significant differences but they are a good starting point.
That said, there is very little to no published load data available for many powder/bullet combinations. What I do in that case is search for all the online data I can find and look for trends to find a good starting point. I usually like to start at least 10% below known max charges and work up in .5 gr or full gr increments (depending on case capacity). For the WSM, I use .5 gr increments.
As you work up, look for pressure signs. That is a tricky art, so I would recommend reading everything you can find on pressure signs. Knowing the burn rates of various powders and how they act with particular bullets and cases helps a lot.
Once you find what your max working charge is, then you can experiment with different bullet seating depths and load charges to find which are most accurate in your rifle.
I found RL17 to give very good velocitiess in my 300 WSM. My max was 67.5 gr fro 180 E-Tips. I would recommend starting @ 61 if you try it.
I have to disagree the WSM does not shoot heavier bullets well. A lot depends on whether or not you are shooting a long or short action and how deep you seat the bullets, etc. I got 2935 fps with 210 Bergers and RL17 in my 300 WSM.
Hope that helps
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