I use R17 in my 260 because I couldn’t get any H4350, and I’m staying with the R17. My brother’s Creedmoor is loaded up with H4350. It’s a Bergara and shoots 120 gr Nosler BTs extremely well. My neighbor wanted to load for his Savage 6.5 CM using my gear, and he had BL-C(2) and 129 gr Hornady Interlocks, and we found a great load, though it’s surely slower than what we could have done with R17 or 4350 (no chrono).
