Best primers?
#2

I do not know that they are the BEST, but I use Winchester W209 primers for everything.
I know Western Powders suggests 'Mag' primers for BH-209 but if you breech plug is designed correctly they are not needed and sometimes can be a detriment.
#6

The ones that make the rifle go "BOOM" . Don't really think there is a "Best" primer. The one that works with your powder charge and makes it go off every time. I know from my rifles that Federal Fusion 209 primers work with Pyrodex RS while CCI 209 primers work with BH 209 for the most reliable loads for my rifles. As mentioned the BH 209 needs a hotter primer to use it along with the right type or style of breech plug for it.
#7
Giant Nontypical
Join Date: Oct 2013
Posts: 9,227

I've got a Remington Model 700 ML in .54 that I converted to shotgun primers. It seems to like the Remington Primers. I tried the Winchester primers but they didn't seem to group as well as Remingtons did in my rifle. My suggestion is get several brands since primers are fairly cheap and see which one your particular rifle likes.
#10
Typical Buck
Join Date: Sep 2009
Location: Kansas
Posts: 921

Don't underestimate the value of a good fit in your rifle. They all will make the gun fire but they all have different widths and lengths.
As Muley states, your model of gun will have a big difference on the best answer.
As Muley states, your model of gun will have a big difference on the best answer.