The factory 35 Remington loadings from the big three at least of Remington, Winchester and Federal are all underloaded to even the current SAAMI spec. This is because of older Remington model 8 (I think) and other pump guns that were chambered in 35Rem. These actions are weaker than say a modern Marlin 336.
The exact same 336 action in a 30-30 is I believe 42,000. Also the 336ER in 356 win Marlin produced also used the exact same receiver. There are many myths that the 336 ER was a different receiver with heat treating etc but as far as I've been able to research there is absolutely no proof what so ever that it is any different than any other 336 receiver.
So while it is true that extrapolating data is not necessarily 100% accurate. It is also true that in modern Marlin 336 actions there is sufficient strength in the action to go above the 35 Rem factory SAAMI spec. There are people on other forums that are in fact doing pressure testing on the 35 rem. The testing so far proves that the factory rounds are well under the SAAMI spec even for an "underloaded" 35 Rem.
Given above accurate loading of 40,000 (CUP) of say H-335 in a 24" barrel s/b aprox. 2400fps ???????
Not by any means saying it beats or actually even equals a stout .356/.358 loading-----but for a 35 Rem(that is Hot)
Before shooting something that hot-----I would have to research this much further.
And------shooting a 200gr @ 2200fps is just dandy for me.
I see the Buffalo Bore has their 35 Rem hot load for a 220gr out of a 18.5" Marlin at 2200fps ????

So, that right there tells me (that gun can handle pressure fairly well)
Honestly OS though you might think I am nuts---------------With my 336A and factory Winchester 200gr ammo(there is nothing in NA I would not hunt)even big bears(with a guide)

Truly though what I have seen that gun/ammo do----------------if I did my part etc.-------that gun would do the job!
It's just one of them guns that kills better than the numbers show on paper!