The difference between 210 and 210m primers

[SIGTWO]

New to reloading. Just a general question. If a load calls for a 210m primer and you use a standard 210 large rifle primer. How would this affect the load. Say the load is a Nosler.308 165gr spitzer using IMR 4895 Federal GMM brass.

Thanks

 

[Rob01]

Re: The difference between 210 and 210m primers

From my experience there is no performance difference. Same accuracy and es/sd numbers.