Don't know what is met by "go to", the closest I can come up with is my hunting rifles.
I use a Model 70 Featherweight in 257 Roberts for deer and antelope and a Model 70 Featherweight in 270 Wn.
I have 6 inch gongs out to 400 yards and every now and then I take them out and wack the gongs. If I can get each gong without adjusting the sights I figure I'm good to go.
So I guess these are my go to rifles.
My target rifles are a different matter, depend on what I'm shooting. They vary.