I am a big fan of all things 35 caliber, and while i do not have any expirence with the 35 Whelen, i have considerable with its ballistic twin, the 350 rem mag, and am just trying out the 358 win.
All 35s that i have fired and the two that i own, are uncommonly accuratte. My 700 classic 350 consistantly groups an inch or less at 100 yards, and a few less than a half of inch. This is with every load that i have tired, in the 180, 200, 225, and 250 weights. Pistol bulletts don;t do as well in my rifle, but are close enough for government work.
Everything that i have shot with the 350 acted like it was hit with a sledge hammer, and all bulletts performed beautifully, regardless of weight and relative hardness. Downrange perfomance is no slouch either, alhtough all of my game shots have been within 150 yards, i still can group at 300 with no trouble, and feel that i could push that, although right now i think i will reserve such for paper and not flesh targets.
I don;t think there are many flies on either, but i sure do like the 35s.
Either way, i bet you get a real shooter.
Take care,
Steve