My 35 Whelen is an 1885 Highwall that started life as a 30/06. I sent it to Jess Rebore to have it rebored to 35 Whelen with his 5 groove in a 10 twist. With 68 grains of Power Pro Varmint behind a 180 TTSX I'm getting 3231 FPS. With the 250 grain Hornaday with 64 grains of CFE223 I'm chronographing 2745.FPS. Groups at 200 are .5 MOA or slightly less.
The Highwall has a 28" barrel. With Barnes 180 TTSX advertised at 2900 FPS I'm getting 2971 FPS. Hornaday 200 grain Superformance factory load advertised at 2910 FPS clocks at 3026 FPS.
