Corbon JHP out of Shield

[fallhunter]

I have some CorBon 115gr. +p JHP 9mm rounds. I have a couple boxes. Wondering if any of you have used these in an M&P Shield and how they cycled and performed. I will test personally myself, but in the mean time I am curious to see how they have performed for others.

Sent from my VS870 4G using Tapatalk

 

[Don 73]

The last I read on Corbon is that the performance of their +P round is on par with the +P+ of other manufacturers, but without the pressures

 

[fallhunter]

It seems to have impressive numbers.

Sent from my VS870 4G using Tapatalk

 

[jeffhughes]

The last I read on Corbon is that the performance of their +P round is on par with the +P+ of other manufacturers, but without the pressures

Funny, what I read indicates Corbon consistently runs below advertised FPS...

 

[shawn mccarver]

I haven't tried that one, but I have tried the Winchester 127 grain +P+ and the Federal 9BPLE, which is a +P+ which runs at about the same velocity as that Cor-Bon load. The performance with both of those loads was so good, you would think the Shield was designed around them.

 

[robkarrob]

I currently only use CorBon for my SD ammo. I use the 9mm +P 115gr JHP in my LC9, which is a smaller and lighter gun, than the Shield. This ammo has 466 ft pounds of energy, at the muzzle at 1350 fps. I use CorBon 40 with the 135 gr JHP, in my Shield. It has 526 ft pounds of energy at 1325 fps. CorBon is about the most powerful commercial manufactured ammo on the market. No issues shooting CorBon in any of my guns. I only shoot a few rounds, each trip to the range. Just too expensive to punch holes in paper.

By the way, I also use CorBon 45 ACP +P with the 165 gr JHP, which has 573 ft pounds of energy at 1250 fps.

Bob

 

[fallhunter]

I have been looking at the Buffalo Bore and Underwood +p+ rounds as well.

Sent from my VS870 4G using Tapatalk

 

[smitret]

Watch Corbon 135s in 40S&W

I currently only use CorBon for my SD ammo. I use the 9mm +P 115gr JHP in my LC9, which is a smaller and lighter gun, than the Shield. This ammo has 466 ft pounds of energy, at the muzzle at 1350 fps. I use CorBon 40 with the 135 gr JHP, in my Shield. It has 526 ft pounds of energy at 1325 fps. CorBon is about the most powerful commercial manufactured ammo on the market. No issues shooting CorBon in any of my guns. I only shoot a few rounds, each trip to the range. Just too expensive to punch holes in paper.

By the way, I also use CorBon 45 ACP +P with the 165 gr JHP, which has 573 ft pounds of energy at 1250 fps.

Bob

If you empty and rechamber a lot watch for bullet setback.

I discovered this before it caused any problems.

Still use CorBon.

 

[ibewbull]

Feeding the 1st round in the chamber manually lessen set back issues.
I do not unload autos once ready to go to work.
One reason I carry a J frame. Or a K .

 

[fallhunter]

If you empty and rechamber a lot watch for bullet setback.

I discovered this before it caused any problems.

Still use CorBon.

What is meant by bullet setback?

Sent from my VS870 4G using Tapatalk

 

[SmurfHunter]

What is meant by bullet setback?

Sent from my VS870 4G using Tapatalk

The bullet will set back further in the case from repeated loading and unloading. Once the bullet is pressed back to a certain point it creates too much pressure within the round and kaboom

 

[fallhunter]

How would I manually load one in the chamber?

Sent from my VS870 4G using Tapatalk

 

[rickyfinch]

Lock slide to rear. Mag out, take round with your hand insert into barrel. Release slide. Insert mag.

 

[fallhunter]

Lock slide to rear. Mag out, take round with your hand insert into barrel. Release slide. Insert mag.

I was thinking that was how.

Sent from my VS870 4G using Tapatalk

 

[Brucenterry]

I thought I read somewhere that manually loading a round was not advised? I carry 1 in the chamber and prior to roping the gun for practice, hate having to fire off that round for fear over pressurizing it from multiple loadings. I'd be interested in hearing from the forum as to what's acceptable.

Thanks in advance for your input.
Bruce

 

[robkarrob]

You can manually load a round in all the M&Ps' with no problem. Just make sure when you release the slide, you allow it to fully slam closed into battery, with no helping or manipulating with your hand. Fully pull the slide back and release. The recoil springs will do the job of closing the slide properly.

The manual says to insert the mag and rack the slide to chamber a round. That is fine if that round only gets chambered a few times. But if you keep ejecting and reinserting the same round, over and over, that is how you can get bullet set back, which can cause much higher internal pressures when fired. That is why we are suggesting to drop the cartridge into the chamber, to prevent set back, as opposed to stripping it from the magazine, over and over. I don't remove the cartridge that much, but I do use the same cartridge over and over, until I get to the range, and then that cartridge gets fired. I've never had an issue, as I drop the cartridge into the chamber each time.


Bob

 

[fallhunter]

Bullet setback sounds bad. How many times is too many?

Sent from my LG-LS980 using Tapatalk