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Offer good in Lower 48 States Only


Heavy .40 Smith & Wesson +P Pistol and Handgun Ammo

SKU: 23B/20

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Heavy .40 Smith & Wesson +P Ammo
180 gr. Jacketed Hollow Point - (1,100 fps/M.E. 484 ft. lbs.)
20 Round Box


All Buffalo Bore Heavy 40 S&W +P loads use flash suppressed powders that give high velocities at low pressures. Since over 90% of all human shootings in the USA happen in low light, we believe that flash suppressed powders are a potential life-saving advantage - you don't want to be blind after you fire one shot in a life-threatening, high-stress situation.

There is such a variety of 40 S&W pistols in public use that we will not determine what pistols are compatible with which 40 S&W +P loads - this is your responsibility! We will add that this ammo is safe in pistols that use a fully supported chamber. Please read the safety notices below. The first one is taken from the Speer #13 loading manual. The second is taken from Hodgdons #27 loading manual.


"Some pistols chambered for the 40 S&W cartridges may not provide complete support of the case head. If this condition exists, normal pressure loads such as those shown here can cause the case wall to bulge or rupture at the unsupported point. Contact your firearm manufacturer to determine if your pistol completely supports the case head, or ask a gunsmith to inspect your pistol before using it with ANY ammunition. It is the gun owners responsibility to know his firearm and its capabilities and limitations."


"This data is intended for use in firearms which fully support the cartridge in the chamber. Use of this data in firearms which do not fully support the cartridge may result in bulged cases, ruptured cases, case head separation, or other conditions which may result in damage to the firearm and/or result in injury or death to the shooter or bystanders."

Glock happens to chamber their 40 S&W pistols without a fully supported chamber and both of those above safety notices are likely aimed at Glock. I know of no other 40 S&W handguns being sold in the US that doesn't have fully supported chambers. If you really want to shoot our 40S&W ammo in your Glock, have an aftermarket barrel that uses a supported chamber, dropped into it. This is a fairly common practice and will give you the safety margin needed to fire our ammo in your Glock. It will also likely give you more velocity than the factory Glock barrel. I personally own two Glock Model 23's. Both of mine are going to get aftermarket barrels dropped in so that I can use this excellent ammo in them.  The issue of Glock pistols not having a fully supported chamber is with the 40 S&W cartridges only, not 45 ACP, 10mm, 9mm or 380 Auto. While Glocks chambers are not fully supported in any of those calibers, only the 40 S&W brass is weak enough in the web for it to be a safety issue. I REPEAT, only the 40 S&W is a safety issue with chambers that are not fully supported. You do not need to be concerned with this issue when using our 45acp+, 10mm, 380 auto+P or 9mm+P or +P+ ammunition in Glock pistols.

Check out the velocities below that I shot with these loads in several modern pistols that I own. We don't believe that test barrels are a very real way of determining real life velocities out of real-life guns that you will be using. So, as with all of our ammo, we use real firearms to determine real velocities. 

Item 23B/20: 180gr. Jacketed Hollow Point

➤   1119 fps -- Custom made 1911 With Nowlin (5-inch barrel)
➤   1035 fps -- Taurus PT 100 (4.9-inch barrel)
➤   1040 fps -- Sig 229 (3.75-inch barrel)

Item 23B - Exterior Ballistics Charts for several Muzzle Velocities


Muzzle Velocity @ 1300 fps for Item 23B


Muzzle Velocity @ 1200 fps for Item 23B


Muzzle Velocity @ 1100 fps for Item 23B


Muzzle Velocity @ 1000 fps for Item 23B

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.

Dr. Evil on 04/01/2020 07:49am
I fire approximately 3,000 of 40 S&W a month. It is my carry gun and I practice alot because I love to shoot. I am also a big game hunter and hunt the biggest most dangerous game on earth. I am big fan of heavy for caliber bullets for their penetration as well destructive power once on target. I am also a trauma surgeon and I have seen men with multiple 9mm hits walk into the emergency department. These rounds give me terminal performance almost as good as a 10mm, better than a 45, in a double stack gun I can carry concealed. My VP40 loves them and consistently produces groups smaller than 2" at 25 yards.
OldRanger on 04/25/2015 07:53pm
I recently bought and tried some of these rounds in my Beretta PX4 SC.
I agree with Reno above in all points. I will buy more of these HOT rounds and use them.
I was completely impressed with the feel, as the projectiles moved down the barrel and downrange. Recoil is palpably strong. Great rounds! Keep up the good work!
buffalo bill on 09/14/2013 04:14pm
Just tried the 40 S&W 180 grain P ammo.
My P229 loves it and so do I!
Will be ordering more soon!
Reno on 02/03/2010 05:56pm
I am currently a Police Officer, as well as a firearms instructor in CT. I bought 180 gr p ammo from Cabelas for carry in my off duty sig. I have access to all the ammo I need for my off duty carry, through my dept, however I prefer to carry these. They are accurate, and hot. Although I never clocked their speed, its clear just from the report, and snap of the recoil that they move out hot. I recomend these rounds!!! I use a number of BB products for hunting, and carry; I have always found the quality and performance to be exceptional.

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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.

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! 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!

3. 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 3-5 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.

These measures are hopefully temporary and will not be needed for long as we enjoy 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