"Mike, the only50 thing I have ever shot in my 350's is 250 grain Speer Hot Core spitzer."
Which I don't believe was available until some years after the .350 hit the ground with a resounding thud.
Remington did offer a 250-gr. bullet option starting about 1968, I believe, but apparently velocity was not all that good and people weren't crazy about it because it wasn't offered all that long.
People handloading 250s and heavier quickly found out the same thing -- that those bullets had to be seated progressively deeper in the case to clear the action, impinging on powder space and unnecessarily.
Near the bottom of this page is a good illustration of what I'm talking about:
http://www.24hourcampfire.com/ubbth...cs/3167507/all/35_Whelen_310_Woodleigh_16_Twi
The first three are 310-gr. Woodleigh bullets, the last one loaded in the .350 is a 300-gr. Barnes.
That's excessive, but it's illustrative.
But, there's another thing at play here that I've not mentioned...
For whatever reason, American shooters have just never really embraced .35 caliber cartridges.
The most successful .35-cal rifle cartridges are the .35 Remington, which has had a dedicated following as a deer and bear gun, and the .351 Winchester Self Loading, and its biggest user group was police.
The .356 and .358 Winchester rounds never really caught on, nor did the .35 Whelen.
The .35 Winchester Self Loading, the predecessor of the .351, was one of the most dismal failures that Winchester every put out.
The .35 Winchester, in the Model 1895, had a relatively short life, and the .358 Norma Magnum and .35 Newton were flashes in the pan.
Personally I never understood it because the .35 is a good candidate for an all around caliber for most North American hunting.