Thread: Stupid Question. bare with me please

You should be fine using Hornadys published coal for that projectile.

That said there are several ways to determine max coal for your rifle/bullet combination without having to purchase specialist equipment.
I use my cleaning rod and a bit of tape (youtube it) I've also used a fired case that's been resized and then cut a slot in the neck, again youtube it.
Locktite and a fired case is another method.

Alternatively you can load to your shorter coal and start at published minimum load and work up.

IMHO it is very useful to learn how to find the lands and then work out your bullet jump, it will expand your understanding of reloading.