Will fed 210 m primer fit 243???

[Darcey]

I have been checking out load info like crazy for my 7mm mag and rem 243. lots of suggestions to use federal match 210 primers or cci 250 m . Will these primers fit the 243 case as well as the 7mm rem mag? I'm confused abit.

 

[rscott5028]

Yes. They both use the same size primer pocket.

The main difference between Large Rifle Primers and Large Rifle Magnum Primers is the intensity of the flame.

Many magnum loads shoot just fine or even better with regular Large Rifle Primers. However, there are some rules of thumb where you may want to stick with the Magnum version:

- ball type powders
- sub-freezing temperatures
- loads greater than ~60 grains of powder

-- richard