Capt, I understood the problem from the start! what I was refereing to is the makeing of NEW RIFLES, in .411 barrels, would relieve the maker of the rifle from liability because there is no danger in shooting a .408 bullet in a .411 barrel. The fact is we've had this problem as long as the 450/400 NE 3" became available. The problem exists with bullet dia no matter if they build a new rifle chambered for 450/400NE 3" with a .411 barrel or not.

This particular pair of cartridges is not the only one with this problem. The Britts had a bad habit of not only calling the cartridge the same name, but useing different size bullets, and different weights, and with the NITRO versions made with no physical chamge in the case dimentions so the cartridge couldn't be chambered in a black powder express rifle.

None of this is any reason not to make a new rifle chambered for these cartridges, as long as it is made with pleanty of room, and stringth for the largest most powerful cartridge he may shoot in the rifle. Simply, in this case make a 450/400NE 3" with a .411 barrel and don't worry about it. Any one with any knowledge of these two cartridges knows the 450/400 3 1/4" will not chamber in a chamber cut for a 450/400NE 3" cartridgeor vice-versa. The only problem is there are examples of rifles with .408, and .411 barrels in both chamberings. However, I was not refering to the makeing of ammo, but of makeing the rifles, and there is no problem with a rifle with a .411 barrel . I understand the misunderstanding, that is my fault. You see I equate all double rifles to handloading, and I'm not interested in factory ammo, as to get the best from any double rifle it is a handloading propostion. Even if they made ammo in 450/400, I wouldn't buy it! I do see your point for bullet maker,who sells his bullets to an ammo maker.