Sackett, I'll take a chance. and speak a bit out of turn, and say 200 yards.
The .405 Win is what the Brits would term an 'express' rifle cartridge, using a light bullet, to get higher velocity, in a black powder time and place.
I shoot a C. Sharps Arms ( John Schoffstall) 'Saddle Rifle', in .40-70 Gov't, which is a .40-70 Sharps, with a shorter neck, and over-all length, case, with a 423 grain bullet, at close to that velocity.
Smokeless powder is the difference!
At 1800 fps, muzzle velocity, the round will shoot entirely through a 400 pound sow, right shoulder and left hip, dropping her where she stood. This, in the presence of witnesses.
For heavy game, the .40 cal rifle is close to optimal; I believe the Win M-95 , with a stock re-design, could be a player; should Ruger build a Number 1, with the external dimensions of their #1-S, in .405 Win, I would pay almost any price for one with pretty wood. My .45-70, #1-S, will drive a 420 Gr bullet 2200 + fps, close to .458 Win energy, and better penetration, and ballistics.
The .405 would reduce recoil, increase useful hunting range, and penetrate better!
Please note, I am speaking of a Ruger #1, NOT the Win 95, here. The win has a max pressure limit in the 44,000 psi range; the Ruger, my observations, not theirs, will exceed 60,000; the brass may not.
Even assuming a 55k Ceiling pressure, the .405 could be, with a long enough bullet, and a barrel,(12 twist?), to match, a 400+ yard hunter, no sweat!
In it's original form, to answer your question, 200 yards would be a 'Hail Mary' shot; In a modern Ruger #1, my loads, 400 is a walk!
One of the finest 'all around calibers' a man could own; assuming, of course, that he's tried the .375 H&H, and found it wanting.