Dutchman,I'd just use the entire 5 sets of bullets.
I had the same thoughts before I shot my 1st rifle with them,but I'm glad I used the entire set.
My 25/06 shot like this before The Tubb's Final Finish bullets.And,It was a copper fouling SoB.
It shoots like this,all of the time now,and is simple to clean with hardly any copper fouling.
Berger 115gr Hunting VLD's. First shot off-Cold Clean Bore-