The 358008 (280gr roundnose) won't stabilize in my 1:16 Rem 700.  It will in SOME folks 1:16 (35 Whelen).
Generally for it 1:14 works.

Interesting about the torque. Find the same thing with my 38-56 when shooting heavier (340-370gr bullets). Considerably more torque with the 38-56 then with even heavier bullets (400-420gr) in my 40-65. Am wondering why this might be? The 38-56 has a 14" twist and the 40-65 has a 14.5" twist, so the difference is minor. Can understand the 10" twist creating more torque in comparison. The 38-56 is tossing out those bullets with 1400fps MV while the 40-65 is tossing them out at around 1250fps.

What sort of load have you been using with your 35-40? I'll be shooting BP and will likely be using as much 3F Swiss as I can get in the case. I'm thinking I might get a 300gr bullet as opposed to the 340gr to see if that helps for 200yd or 200m shooting. With 
t (torque) = r (force vector) x F (force) am guessing the F from the high velocity of the 38-56 is enough higher than that of 40-65 to make the difference. Will guess the same is true with the 35cal 340gr bullet.

BTW - If anyone is looking for a nice 35-40 Maynard chambered Hepburn with DSTs, nice wood and a 30" long 10" twist barrel and Baldwin sights, Steve Baldwin has one for sale at a very good price. Too bad I've all ready embarked on my rebuild.

Except that is the opposite of what we have both felt. Theory is great, but reality is better.

Steve Baldwin has done quite well with his 35-40. I'll be using mine on shorter range courses of fire, but may take it out for a stroll on the BPCR/BPTR course on occasion. Should have everything back together come spring.