Checking Seating Depth
by: Germán A. Salazar
Our club has many members who are relatively new to the area of precision reloading for rifles; accordingly, I will ocassionally present a small feature on some aspects of reloading that will benefit those members. The previous topic on headspace was one such article, here is another.
Determining exactly how long a specific bullet may be seated in the case before it touches the rifling is a simple, though important, process calling for a few tools and a delicate touch. Once you have determined this dimension, you can then vary it in an effort to extract the maximum accuracy from your rifle. While that tuning process will be a topic for another day, a few recommendations about seating depth will be at the end of this article. First, let's see how we determine the basic dimension.
Begin by threading the case onto the tool, it should be snug, but just by hand. Retract the inner rod by loosening the lock screw and insert a bullet into the case.