I just picked up a 1886 in 33wcf and I am looking for the flat nose hornady 200gr bullets and a set of dies. If you have some you'd be willing to part with drop me a PM. Thanks
Most .33 Win brass is formed from .45-70 brass.
The .33 Win chamber and ammo is usually a bit smaller than .45-70 brass is at the head.
If you can - measure the diameter of the big end of your chamber.
W-W brass is about .501 to .502 and will be too large.
R-P brass is about .4998 to .499 and may fit as is after forming.
I think I have a set of CH FL dies. I can form you some brass. I have a set of RCBS form dies.