Ruger #1S 300 H&H Mag
Seems a lot of your rifles are very accurate.
Reckon it’s something to do with attention to detail and shooting technique.
DF
Back in the early t mid 90's I worked part time in the LGS (mostly to support my firearms habit) and I had a saying, " 90% of the guns in this store shoot 100% better than the person pulling the trigger".
WTBS my RSI 7x57 has had all the stuff done to it and it's a decent shooter with one load. 50 gr. H414 and a 145 Speer GS. Hot load. Nickle cases and neck sized only. Chrono'ed 2850 the only time I've ever checked it.
My #1 medium sporter in 45-70, I don't know how it shoots yet. No time to mess with it right now.