RevMike, I too have a model 70 Featherweight in the classic 7x57. I've developed several loads for it so far, but to date my favorite is a Nosler 120gr Ballistic Tip over 45grs of Varget.
I shot some test loads with the 120gr TTSX and H414. I only shot 16 of them so I didn't develop it any further. It was capable of around an inch.
This spring I bought a hundred of the Barnes TTSX 110gr flatbase and I tested both Reloader 17 and BigGame powder with that bullet. The RL-17 produced a 4shot group just under an inch and the BigGame wasn't as tight coming in around 1.25. The RL-17 netted an avg velocity of 2896 so I figure it'll do the job.
