The stainless won't make a difference but the brand will try the Federal blue or red box Last time I check this is what Ruger uses to test fire their rifles & what was recommended by an employee that ran the range at Ruger (it was my brother) I have had the best luck with my M77 .270 using the federal ammo I have used others Rem., Winchester etc...
but I would start there
OVERKILL IS USING A TANK
BUT IT COULD BE FUN
Remember when posting what may seem innocent to you may not to others,
text shows NO emotions so please,,, don't take it personal & automatically go on the defense.
Take it w/ a grain of salt, take it as a joke or just let it go.
"If George Washington was asked for his I.D. do you think he just wipped out a quarter?"