I also try to break it up with 4 shots quickly then I let the barrel cool a bit and fire the last 4.
You're gonna wear that barrel out prematurely due to excessive heat build up. I fire two shots and let my barrel cool no matter how large the group number is.
One six shot group I fired took six days: One shot every morning for six days. I
know where that rifle is going to place its cold bore shot.
