I'm still learning about ammo and am not all the way in the know when I hear you guys talk about SAAMI/NATO "approved" rounds, etc. I read a thread on here last night that was talking about shooting 9mm +P in a Glock and if it was safe to do so? Basically what was said is that the Glock is NATO approved and NATO deals with higher pressure than SAAMI so if its NATO approved, then a +P SAAMI would be good to go. At least this is what I took from it.
Tonight I decided to do some brief research on Buffalo Bore ammo given that its mentioned on here and receives good reviews/testimonies.
In my search I found the .40 S&W +P ammo that BB sells. I know that some of you say that there is no such thing but BB sells it just the same.
When you read the description for this product, it has a warning for Glock owners;
40 S&W WARNING
"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 of 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 don't have fully supported chambers. If you really want to shoot our 40S&W ammo in your Glock, have an after market 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 after market barrels dropped in so that I can use this excellent ammo in them.
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."
Heavy .40 Smith & Wesson +P Pistol & Handgun Ammunition
My questions are;
1. What does "supported chamber" mean?
2. What kind of aftermarket barrel would I have to get in order to satisfy this "supported chamber" requirement?
3. From other discussions about ammo, would some of you say that it would be better to go with a less powerful round using a heavier grain? Wouldn't it accomplish the same task, without having to change the barrel?
Any help you may provide to shed some light on this issue for me is greatly appreciated.