I too, load for bullet weight, not caring who made the bullet. The older loading charts made no differential for different types, or brands, of bullets. The loading tables of the day simply stated a bullet weight, then gave all the various powder charges for it.
Norma gave the model number of their bullet and a load for it. For example, if they had three 180 grain bullets for the 30-06, they gave the load for each. However, in every case, the exact same amount of powder was used for each bullet type.
The argument I hear about treating bullets differently, is that pure copper bullets create more pressure. I have never used pure copper bullets, so don't know. However, after WW2 Fred Barnes restarted his bullet making business. His new premium bullet was made from small copper pipe, the same as you buy in the hardware store. The bullets were swagged to a point, with a bit of lead exposed. The hard lead alloy was bonded to the heavy copper jacket. My brother bought a batch of these bullets in 30 calibre in both 150 and 200 grain.
The 200 grain were loaded with a stiff load of 4350, for the 30-06. The same load was used as would be loaded for any 200 grain bullet. We shot them in three different rifles, that I can think of, off hand. I think those bullets would have created as much pressure, as would pure copper bullets. But they gave no problems in any of the rifles we used them in.
There is another aspect to this whole thing. Parker Ackley reminds us that with rifles and slow powders, peak pressure is reached after the bullet has travelled a few inches down the bore. The lands are impressed into the bullet while pressure is still low. By the time peak pressure is reached, the bullet fits the barrel perfectly and just blows out with normal pressure.
This rant is not meant to tell, or advise, anyone on how to reload. Just do your thing the way you want todo it, in a safe manner, going by what your loading book states you should do.
