In general, our bullets typically perform their best when shot at velocities no greater than 1,200 to 1,250 Feet per second (FPS).
A slight taper crimp is what we recommend, for example as delivered by a Lee Factory Crimp or similar die.
Because our bullets are so soft a cannelure groove is not needed to achieve a positive, tight grip of the bullet in the case mouth.
Loads for copper jacketed bullets can be used for Rainier copper plated bullets. We recommend a starting powder charge directly between the listed minimum and maximum load.