Hello,
Loaded up some .416 Weatherby Magnum rounds as "plinkers".
Here are the recipe and results:
2x fired brass
Speer 350g Mag Tip seated to OAL of 3.70"
100g Alliant Reloder 22
Federal 215 primer
Weather: 43 degrees
Oehler Model 35P
2257 from cold barrel (1st shot)
2281 fps avg - 40fps spread (I shot several strings of 3 as fast as I could rake the bolt, reloaded and did it again).
At 100 yards, 9 bullets clustered within 2.5" doing this from a bench with the the butt supported only by my shoulder and the forend gripped lightly in my hand and wrist supported by a rolled up carpet.
When I whip up the next batch, I will shoot more deliberately for accuracy.
After loading these up, I took a look in my new Swift reloading manual which ahs a starting load for the .416 Rigby with their 350g A-frame of 92g of RL22. I will probably give tht a try as well.
Stay well,
Paul
