DANGEROUS GAME 45-90 WINCHESTER +P

BUFFALO BORE DANGEROUS GAME 45-90 WINCHESTER +P AMMUNITION

45-90 WINCHESTER MONO-METAL +P
380 gr. Mono-Metal @ 2,300 fps/ME 4,463 ft lbs
20 Round Box

ITEM 45-90 DG 380

For decades, I’ve been asked to create some modern, very powerful 45-90 ammunition, and here it is. This load features our 380 gr. mono-metal hard copper solid bullet, designed for no expansion and thus very deep penetration. This is the same bullet we use in our 45-70, item # 8 DG 380 ammunition, but at 225 fps more velocity due to the longer (45-70 = 2.105 VS 45-90 = 2.400 inch) case of the 45-90 and its therefore greater powder capacity. This bullet achieves a full 2300+ fps from my several Winchester model 86s with 22 to 26-inch barrels. 

The 45-90 cartridge is so much longer than the 45-70 that it requires the longer 1886 action. The Marlin 1895 45-70 action will not cycle a cartridge this long.  

Velocities of the full power (+P) 45-90 ammunition are exactly midway between the hottest 45-70 loads and the hottest 458 Win. Mag. loads with like bullet weights. Any time you can gain over 200 fps more velocity with a 380 gr. bullet, it is a substantial gain. 

We will be making several other 45-90 +P and “Black Powder Equivalent” loads. We will also be coming out with a 350 gr. TSX Spitzer load, for single shots. This will be a 2350+ fps load. 

This 380 gr. Mono-Metal bullet is the load I would use on African Dangerous Game, including elephant, where the deepest penetration is needed. Even at 45-70 velocities, I have witnessed this bullet penetrate both shoulders on a cape buffalo and make a beautiful one-shot kill. At 225 fps faster velocity in the 45-90+P, it will do the same thing, but with even deeper penetration. 

This bullet nose profile cycles 100% in all my new Miroku 1886s, but will not cycle in my 1906 made 1886. 

If you are going to fire this +P ammo in 100+ year old Winchesters, it is fine to do so if your rifle has a proper steel barrel. Read this article on aging your rifle, so you can be safe in doing so.

THE DANGERS OF NOT AGING YOUR FIREARM VERSUS THE ADVENT OF“HIGH-PRESSURE STEEL” FOR USE WITH SMOKELESS POWDER

There is no need to destroy old relics and hurt yourself in the process by firing high-pressure ammo in metal barrels designed for low-pressure black powder. The pressure of this +P 45-90 ammo (all of our 45-90 +P loads) is approximately 38,000 PSI and is 100% safe to use in the modern model 1886 and all of its clones that I am aware of. 

While our +P 45-70 loads are plenty powerful for the world’s biggest bears and for Cape Buffalo, this new 45-90+P ammo is even more so, if you are using the proper bullet/load. 

You’ll note my real-world velocities from real-world rifles below. 

> 2,314 fps - Modern Winchester 1886 rifle, 24-inch barrel
> 2,298 fps - Modern Winchester 1886 Carbine, 22-inch barrel
>                 - 1906 Winchester 1886 rifle, 26-inch barrel 

Item 45-90 DG 380 - Exterior Ballistics Charts for several Muzzle Velocities

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Muzzle Velocity @ 2500 fps for Item 45-90 DG 380

Muzzle Velocity @ 2400 fps for Item 45-90 DG 380

Muzzle Velocity @ 2300 fps for Item 45-90 DG 380

Muzzle Velocity @ 2200 fps for Item 45-90 DG 380

Muzzle Velocity @ 2100 fps for Item 45-90 DG 380

Muzzle Velocity @ 2000 fps for Item 45-90 DG 380

Muzzle Velocity @ 1900 fps for Item 45-90 DG 380

Muzzle Velocity @ 1800 fps for Item 45-90 DG 380

Muzzle Velocity @ 1700 fps for Item 45-90 DG 380

Muzzle Velocity @ 1600 fps for Item 45-90 DG 380

Field-proven rifle and gun ammo. Maximum firepower ammo. Best ammunition for rifles and guns for sale. Buffalo Bore. Strictly big bore. Strictly Business.

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