My favorite load is for my David Gentry Mark X Mauser in 35 Whelen Ackley Improved 40° with 24 inch, 1 in 14" twist barrel and 3-9x Nikon scope.
I start with new Remington 35 Whelen cases fireformed with 32 grains of 5744 and a 250 gr. lead RN-GC from Montana Bulletworks, trimmed to 2.48 inches.
62 grains of Alliant Power Pro 2000 MR powder over a WLR primer.
250 grain Hornady Spitzer seated to 3.34 inches OAL.
Chronographed at 15 feet in 60° weather @ 2628 fps average of 3 shots into .475 inch group at 100 yards off sandbag rest.