20 cal nosler bullets

[Reloadhby]

I have watched this for a bit and picked up some not bad esp with now prices

20 dollars for 250ct

Varmageddon 20 Caliber 32 Grain FBHP Bullet (250ct) (nosler.com)

 

[cdrdr]

Pardon my ignorance what cartridge are these projectiles commonly used in?

 

[Redleg]

204 ruger