I didn't know there is ground glass inside rimfire primers..

by Bryan , Ft Worth, TX, Friday, November 04, 2016, 23:33 (2943 days ago)

this is an interesting article and I learned some stuff I didn't know about making rimfire ammo. It's intriguing that they haven't perfected the recipe for rimfire primer compound...and it has ground glass in it...which the bench rest guys aren't thrilled about.

Another interesting thing is that earlier target rimfire ammo seems to be easier on barrels than current varieties. I haven't seen why yet. Anyone know?

https://www.americanrifleman.org/articles/2010/9/10/the-impossible-22-rimfire/