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45-70 Magnum - Lever Gun Rifle Ammunition c

SKU: 8C/20
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 45-70 Magnum - Lever Gun Ammo
350 gr. JFN @ 2,150 fps/M.E. 3,591 ft lbs
20 Round Box




Our 45-70 ammunition is externally identical to SAAMI spec 45-70 ammo, but internally it generates FAR more power and pressure. So, our 45-70 ammo will fit into ANY 45-70 firearm but is not safe in every 45-70 firearm. 

Its use should be limited to the following firearms:

All Marlin 1895 (1895 Marlins are all model 336 actions, chambered in 45-70) iterations made since 1972, all Browning 1885 and 1886 copies, Rossi Rio Grande, New England Arms Handi Rifle, T/C Encore, ALL falling block actions made of modern steel such as Ruger #1 and #3, Shiloh, Christian and Pedersoli Sharps, Henry Lever Action Rifles, all Winchester 1886 iterations made since 1915, CVA Centerfire Rifles and all Siamese Mauser bolt actions.

Never use this ammo in ANY original or reproduced "Trap Door" action as the design is far too weak.

We use only factory stock firearms in recording published velocities, so you get true, actual field velocities with our ammo -- not exaggerated long laboratory test barrel velocities.
Item 8A (430gr. Hard Cast penetrator)

?  1920 fps -- Marlin 1895, 22-inch barrel
?  1879 fps -- Marlin 1895 Guide Gun, 18.5-inch barrel

Item 8B (405gr. JFN expander)

?  2002 fps -- Marlin 1895, 22-inch barrel
?  1955 fps -- Marlin 1895 Guide Gun, 18.5-inch barrel

Item 8C (350gr. JFN penetrator)

?  2145 fps -- Marlin 1895, 22-inch barrel
?  2060 fps -- Marlin 1895 Guide Gun, 18.5-inch barrel

Item 8D (500gr. Barnes Buster FMJ-FN penetrator)

?  1628 fps -- Marlin 1895, 22-inch barrel
?  1590 fps -- Marlin 1895 Guide Gun, 18.5-inch barrel

Item 8E (300gr JHP expander)

?  2355 fps -- Marlin 1895, 22-inch barrel
?  2263 fps -- Marlin 1895 Guide Gun, 18.5-inch barrel

Many a Grizzly Bear, Cape Buffalo, Bison and other dangerous game have fallen to our 45-70 loads since we began 45-70 production 1999. Below is an idea of what type of game these loads were designed for.

Item 8A -- for game where 5 to 6 feet of straight line non-expanded penetration is needed.

Item 8B -- the bullet utilized expands to an inch or more in diameter at our velocities and hence penetration is limited to about two feet in flesh and bone. This is the single most effective hog and black bear load ever devised in 45-70. I don't use it on animals weighing more than 800 lbs as it won't give adequate penetration at bad angles for animals larger than 800 lbs. If you'll limit yourself to broadside (double lung) and CNS hits, this load will work on 2,000 lb animals.

Item 8C -- The bullet we utilize in this load is very tough and gives only a small to moderately sized mushroom (about .60 cal) and because of the smallish mushroom, it penetrates very deep -- about 4 feet in muscles and bone and as such is a great bullet for use on dangerous game and on smaller game too as it does expand some. This load is the most versatile of our 45-70 loads.

Item 8D -- This bullet is a solid and won't mushroom and thus will penetrate 5 to 6 feet in muscle and bone.

Item 8E -- the bullet utilized in this load will expand radically and will penetrate only about 18 to 24 inches in muscle and bone and was designed for use on animals weighing no more than 400 lbs. At 2350 fps it is very fast and flat shooting. (For a 45-70)

Item 8C - Exterior Ballistics Charts for several Muzzle Velocities


Muzzle Velocity @ 2300 fps for Item 8C


Muzzle Velocity @ 2200 fps for Item 8C


Muzzle Velocity @ 2100 fps for Item 8C


Muzzle Velocity @ 2000 fps for Item 8C


Muzzle Velocity @ 1900 fps for Item 8C

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

You must be 18 or older to order ammunition. Ammunition must ship UPS ground. Due to Department of Transportation regulations, we cannot accept returns on Ammunition. Make sure to use the correct ammunition in your gun. Check local laws before ordering.

H Arnold on 06/20/2022 12:10am
Used your 350 gr JFN on a recent Saskatchewan bear hunt. One shot and the bear dropped in his tracks. Bear was a trophy at 6%u20198%u201D long. Ammo is also very accurate with one inch groups at 100 yds in my Marlin Guide Gun. Excellent ammunition!
John on 04/21/2020 03:41pm
I purchased your ammo (350 gr. 45-70) from Cabela's and then checked out your website after getting it off the box.

My bear scaled at 451 lbs. field dressed with approx. live weight of 500 lbs. The dogs had it bayed up in these open hardwoods. I took my shot from about 50 yards and put him right down. Once again, thanks for a super product. Your ammo is top shelf.

Townsend, WI

Craig on 04/21/2020 03:34pm
To all at Buffalo Bore
I used your 45-70 buffalo bore 350-grain bullet and took this buffalo at 75 yards - blowing out both lungs and exiting the other side with a 3/4" size hole. I dropped him immediately with one shot. Because of the awesome knockdown power and accuracy of your ammunition, I will not use any other kind from now on.
Just thought you would like to know how I feel about your product.
Craig Lowe
Florissant, CO

Jimmy on 04/21/2020 03:28pm
Hello, my name is Jimmy Elixson and I just want to say thanks for your 45-70 p loads. I shot a 427lb black bear just a few weeks ago, with your 350 gr. bullet and wow! I made a straight on shot at about 4 feet in the head and the bullet went in under the left eye and went thru the head and all the way down be side the back back bone and I dug the bullet out of the back left ham. My bear was 5 feet 3 inches from nose to tail on it side laying down and your bullet was about 3 inches from making a complete pass thru on that bear.

I have hunted black bears a long time and this is by far the best ammo my buddies and I have ever seen. I bought ammo back in late November just to try something new and I'm glad I did. And I love how it shoots in my Marlin guide gun. I'll be a customer of yours for many more hunting seasons to come. Oh, I almost forgot to mention, I weighed the bullet when I pulled it out and it still weighed 337 grains. Once again thanks.

RS on 09/27/2019 02:35am
I've been using BB 350gr for years now, from hogs to elk, they get the job done every time. A lot of difference from old type 45-70 loads, these are hot! As mentioned recoil is stiff, about like. 12ga slug I would say, so not horrible, just stiff. Really wrings the most out of my guide gun. on 11/23/2014 12:27am
Recoil is stiff. But its what you wouldd expect for such a deep penetrating as well as super accurate outta my guide gun. Big bears here in PA. So this is a crossover to whitetail with our overlapping seasons. Not to much damage on whitetails. Clean exit,little meat damage. But still has the sauce for a 5-700 pound black bear.
B Pearch on 08/29/2011 12:30pm
I've used this ammo in a Marlin Guide Gun for the past 4 years (350 gr. JFN) on moose. It typically groups around an inch off the bench preseason.
Moose have been taken broadside from 50 feet to 150 yards. Have been able to recover 2 bullets, both just under the hide on the far side of the bull. Very little meat damage, and the moose have not gone more than a step or two before hitting the ground.
Just be ready, it will thump you on the bench but you'll never notice the recoil in the bush.
william Brooks on 10/27/2010 12:20pm
i live in oregon and i am using my marlin 45-70 lever gun (not guide gun). as of yet i have not bgged an elk yet with this rifle/bullet combo. the luepold 3-9 scope has my rifle shooting 2'' high at 100yd. very small moa 1'' patterns. i'm very happy with these bullets at 350grs. i'm very sure that they will do the job. i too hunt where big cats rome so i also carry a s
Robert Johnson on 05/25/2010 06:13pm
This 350gr .45-70 worked perfect on my first Elk Hunt. Shot a trotting elk at just under 100 yards with an 1886 Extra lite. Bullet crushed through a rib on impact and exited out the shoulder after passing through both lungs. The critter died so fast it was already on the ground and out of sight when I recovered from the recoil. Exit wound was smaller than the entry wound; very little loss of meat. The cartridge performed perfectly.
C. Smith on 08/12/2009 08:10am
I used this ammo on a bison hunt. Two shots one complete pass through one in offside skin. They performed just as they should. Chronographed in my 28" barrel at an average of 2304fps. The recoil is not for the faint of heart but ammo perfoms flawlessly.
G. Vincent on 04/01/2009 09:02pm
I hunt black bear in Montana with a Marlin 1895 chambered in .45-70 Govt. In addition to black bear, the area that I hunt is also occupied by grizzly and mountain lion. My ammo of choice is the Buffalo Bore 350 gr. JFN. Although the recoil is fairly significant especially when shooting off of a bench rest, it is very reassuring knowing that my ammo is both accurate and effective.

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