I found an old Lyman reloading book from the early 80ís in my book case. I had forgotten about it. It had a bunch of old targets from shooting sessions at Hot Wells and at Carterís Country. Just another example of us keeping the good groups. The best was, per the notes on the target, a .47 inch group, using those Nosler 60 gr SBBT bullets in my 220 Swift with the new Douglas barrel. I wonder if those bullets were tougher than the 60 gr Nosler BTs of today. I tend to think they were, but i have no factual reason to believe that.
Back then, the only bullet i used in the 220 for deer and pigs was the 63 gr Sierra SMP.