HG Ammo

Rifle Button

Inflation Button


(Retail Orders Only) 

Offer good in Lower 48 States Only


Heavy 357 Magnum Pistol and Handgun Ammo

SKU: 19D/20

Qty: - +
   - OR -   

Heavy 357 Magnum Ammo
125 gr. J.H.C. (1,700 fps/M.E. 802 ft. lbs.)

20 Round Box


Our 357 mag. ammo adds more power than ever before to the 357 Mag. This ammo is safe to shoot in ANY all steel 357 revolver - this includes J frames. This ammo is no harder on your gun than any other normal 357 ammo. Please don't phone or email us and ask if this ammo is safe in your gun. It is, providing your gun is in a safe condition for use with any normal 357 ammo.

We don't recommend this ammo to be fired in super light alloy revolvers as bullets may jump crimp under recoil, but the ammo itself won't hurt these super light weight revolvers. These revolvers are simply so light that the recoil is severe enough to cause jump crimp.

The below velocities are offered so that you can see what guns/barrel lengths give what velocities with this new 357 mag. ammo. You'll notice that new S&W revolvers with short barrels are often shooting faster than older S&W revolvers with longer barrels. The new S&W revolvers are very good and are made with equipment that makes them more consistent and faster than the S&W revolvers of yesteryear.

Make special note of the Marlin 1894, 18.5-inch barrel velocities. Item 19C/20 supersedes 30-30 energies!!!

➤   3-inch S&W J Frame

a. Item 19A/20-180gr. Hard cast LFN = 1302 fps
b. Item 19B/20-170gr. JHC (jacketed hollow cavity) = 1299 fps
c. Item 19C/20-158gr. Jacketed Hollow Point = 1398 fps
d. Item 19D/20-125gr. Jacketed Hollow Point = 1476 fps

➤   4-inch S&W L frame Mt. Gun

a. Item 19A/20-180gr. Hard cast LFN = 1375 fps
b. Item 19B/20-170gr JHC = 1411 fps
c. Item 19C/20-158gr. Jacketed Hollow Point = 1485 fps
d. Item 19D/20-125gr. Jacketed Hollow Point = 1603 fps

➤   5-inch S&W model 27

a. Item 19A/20-180gr. Hard Cast =1398 fps
b. Item 19B/20-170gr. JHC = 1380 fps
c. Item 19C/20-158gr. Jacketed Hollow Point = 1457 fps
d. Item 19D/20-125gr. Jacketed Hollow Point = 1543 fps

➤   6-inch Ruger GP 100

a. Item 19D/20-125gr. Jacketed Hollow Point = 1707 fps

➤   18.5-inch Marlin 1894

a. Item 19A/20-180gr. Hard Cast = 1851 fps
b. Item 19B/20-170gr. JHC = 1860 fps
c. Item 19C/20-158gr. Jacketed Hollow Point = 2153 fps---- Can you believe this?!!!
d. Item 19D/20-125gr. Jacketed Hollow Point = 2298 fps---- Or this?!!!

Item 19D - Exterior Ballistics Charts for different Muzzle Velocities



Muzzle Velocity @ 2300 fps for Item 19D


Muzzle Velocity @ 2200 fps for Item 19D


Muzzle Velocity @ 2100 fps for Item 19D


Muzzle Velocity @ 2000 fps for Item 19D


Muzzle Velocity @ 1900 fps for Item 19D


Muzzle Velocity @ 1800 fps for Item 19D


Muzzle Velocity @ 1700 fps for Item 19D


Muzzle Velocity @ 1600 fps for Item 19D


Muzzle Velocity @ 1500 fps for Item 19D


Muzzle Velocity @ 1400 fps for Item 19D

Field Proven pistol and handgun ammo. Maximum firepower ammo. Best ammunition for pistols and handguns 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.

Jonas on 12/16/2021 09:03pm
Awesome round!!! I highly recommend it! Performed flawlessly in my 4" 357 magnum
R.M on 05/27/2021 07:47pm
This is the best 357Mag self defense ammo I have every used bar none! This 125gr 357mag ammo is what makes 357 magnum so great! I would not hesitate to use this however it rocks the indoor and outdoor, range when I practice with it so I have electronic earpro on my nightstand to go with my revolver for home defenseit will damage your ears indoors so train appropriately.
James Echols on 04/08/2019 04:36pm

This round within 100 yards will kill wild boar. It seems to be a good balance of velocity and energy. Most of these hogs were taken from 40 to 75 yards. If stretched out past 100 it should be a head or neck shot only. 


I haven't taken a deer with it but within 100 yards I wouldn't hesitate to take the shot. This is real world stuff hope it helps. The standard rounds didn't work nearly as well or kill as well as your ammo. 

Thanks for making a quality product.

Russell Echols

Doug Kubosh on 07/01/2018 07:45pm
BOOM! don%u2019t mess with Texas or these Buffalo Bore 357.
Randy Monette on 01/29/2018 08:40pm
I Can't Wait To Shoot This In My MODEL 66 .357 MAG. REVOLVER 7 Shot !!!!
jr. on 11/11/2015 08:23pm
Love it, the recoil is a bit stout, But it is manageable. Would definitely recommend!
Shane on 07/03/2014 06:45am
I did a full review here:

Any way this round produced an honest 1800 FPS from my long Barrel (6 inch) Coonan Classic. That is about 900 Foot pounds of energy! Long story short its plenty accurate and very reliable. My Coonan loves this ammo. They have a bit more recoil than typical 357 magnum rounds but they have a lot more energy. I would love to see what they do in my gun to ballistic gel.

Great product. I am now a loyal fan!
Jack on 03/29/2014 06:17pm
This stuff is a blast to shoot out of my 686P 6".Tried two boxes of this and am now hooked.This stuff jumps out of the gun!It's a like a whoosh out of the barrel.Used this in an indoor range and my friends next to me stopped what they were doing and said "whoa, I can feel that when you shoot.So happy that Buffalo Bore is here to show other bullet manufacturers what a 357 Mag is suppose to do. Thanks Buffalo Bore!
AZ on 11/18/2013 10:37pm
Outstanding! No problems firing this super hot stuff in 2'' barrel Taurus 605.
Marcello Gallucci on 04/26/2010 05:33pm
Awsome ammunition. Extremely powerful and loud. People next to me at the range thought I was shooting 44 magnum until they saw the gun. I only wish I had reassurance from someone that it would be safe for my Ruger GP100 to consistently fire this ammo without damaging the gun.
Chuck Militti on 02/14/2010 10:20pm
I was looking for maximum velocity and power out my S
Jack Summerlin on 02/06/2010 12:42pm
Fastest 125gr on the market! Got 1300 fps from a 1.8" S
Jack Summerlin on 02/06/2010 12:41pm
Fastest 125gr on the market! Got 1300 fps from a 1.8" S
Reg on 05/28/2009 03:47pm
“★★★★★”After going over the Buffalo Bore website I decided to call the company. I actually spoke with Tim Sundles who assured me that their .357 loads were safe to fire from my Ruger GP100. So, I bought a box of 125gr J.H.C. intended for home protection. Needless to say I had to sneak a few to the range. I had to really, really relax to make sure that I didn’t over-grip my revolver anticipating the “kick”. After taking a deep breath and firing, these babies are on target and the recoil isn’t bad at all! Although these are .357 loads, they sound like .44 magnums! You can feel the controllable power in these loads and I highly recommend them. I think I’ve found a real friend with Buffalo Bore. I guarantee that you’ll like ‘em too! “★★★★★”

Add Your Review

Your Name:
Email Address:
Note: HTML is not translated! Your email address will not be shared with anyone.
Your Rating: 5
Your Name:
Your Email:
Friends Name:
Friends Email:

Friends and Customers, 08-18-20


All shooters are being inconvenienced with what is happening to our society and the rush it is causing on ammo supplies. We have LOTS of ammo in stock and are making more at a huge volume on a daily basis. If our web site allows you to order any item, that means it is in stock—WE DO NOT TAKE ORDERS FOR ITEMS WE DO NOT HAVE! So, please do not email and ask if items are in stock. If they aren’t, the shopping cart will not take your order.

We have hundreds of customers to get orders to on a daily basis. In order for us to accomplish this for our customers, we ask the following.

  1. Be sure of what you are ordering. You are going to get what you ordered.

  2. Do not contact us and ask to change an order you’ve already placed. When we manually change orders it requires a lot of time that we do not have during this rush and it keeps us from serving all of our customers. If you’d like to change an order, we can no longer do that till things slow down, so simply place another order for more product, but PLEASE, NO MORE CHANGES after the fact!

  3. We NEVER have and never will take ammo exchanges or returns and then turn around and re-sale that ammo to unsuspecting customers as factory new ammo—this is not safe nor is it fair to customers who are buying what they think is new and safe ammo. No ammo is tamper proof! So please stop asking to exchange or get a refund for ammo you ordered, but have changed your mind about.

  4. Please do not contact us and ask for tracking numbers or “when will my ammo ship”? Our system automatically emails out tracking numbers on the orders we ship each day, however, because these emails are coming from a corporation shopping cart, many of these emails may go to your spam folder……..please look there. If it is not in your spam folder, that means we have not yet shipped. At current order rates, we are shipping within 5-7 business days of the time an internet order is placed. Please sit tight. Your ammo will arrive at the same time if you track it or not and will certainly arrive later if we are swamped answering questions instead of getting orders shipped. When 30-50 people per day send emails asking for tracking information and we have to pull that information up, then type it out and email it, it takes a huge portion of our work day that we should be using to ship those orders to customers in need. Please leave us alone so we can serve all of you. (ship to you) It’s a bit selfish, during times of shortages, when so many folks need to protect their families, to slow us down because you ordered carelessly or want to change your order. Right now, we expect you to do your part to help us all get the ammo we need in our troubled country.

These measures are hopefully temporary and will not be needed for long as we enjoy the interaction with our customers, so please, for the time being, be mindful of all those others who are also trying to get ammo during what I think is a societal meltdown/emergency. Hopefully, we can serve you all. We want you and your families to be armed and safe and we wish you the best during these trying times. My biggest concern is that things will worsen yet more, for a while. Until things straighten out in our government and society, we will have to streamline our customer service in order to serve all customers. Thank you for your understanding.

Good shooting and God bless,

Tim Sundles

I Understand