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Corbon 135gr in .40

Discussion in 'Caliber Corner' started by youngbuck, Jan 9, 2010.

  1. youngbuck

    youngbuck He's Tyrone!

    Jan 4, 2010
  2. What is your intended purpose with these rounds?

  3. SDGlock23

    SDGlock23 Glockoholic

    I've heard good things about 135gr .40's in actual shootings, but keep in mind it is a light for weight load and you won't have to worry about over penetration. That's an average velocity for the 135gr .40, but if you pay attention, you'll see that there are very few 135gr offerings anywhere for the .40, it's not a real popular choice. Federal is the only big ammo maker to offer 135gr loads and they're loaded light. CorBon is about the only company I know of that makes the standard velocity 135gr .40.
  4. carbofan21


    Jul 16, 2006
    any 135 grain JHP is likely to underpenetrate, but particularly the corbon as a lot of their loads have a tendency to fragment. if i still owned anything in .40, that's one of the last loads i would choose for self defense.

    see if you can find some 180 grain federal HST or 180 grain winchester ranger T (talon). either of these loads will penetrate adequately, get good expansion, and follow-up shots will be fast and easy
  5. MarkCO

    MarkCO Millennium Member CLM

    Dec 21, 1998
    I tested the 135 Cor-Bon against the others. Penetration is less than a good 155, 165 or 180.

    Of the 135s, you picked a poor one. Of .40 loads in general, one of the poorest.
    Last edited: Jan 9, 2010
  6. Agreed.

    It would be hard to pick a worse load for self defense. Check out the links on my signature for better loads.

    Don't pick a self defense loads based on kinetic energy or velocity numbers. That is the sure sign of someone who knows nothing about terminal ballistics.
  7. Ak.Hiker


    Feb 8, 2005
    Homer Alaska
    I would not under estimate what the 135 grain CorBon load can do when used for SD. Do you really think that CorBon would market the 135 grain load for as many years as they have if it was a poor performer. Ted Nugent has used the 135 grain bullet in the 10mm for game shooting with good results. It has always run good in my Glocks.
  8. youngbuck

    youngbuck He's Tyrone!

    Jan 4, 2010
    So what am I supposed to look for in order to know what kind of ammo is good for my self defense?
  9. Steel Head

    Steel Head Tactical Cat

    Jan 1, 2010
    A cat box in WA
    Research-Form an opinion-stick to the plan
    There's TONS of data available
    From the data find what you want/need
    Get the ammunition that you think is needed
    The 135's are WICKED on coyotes/crows:whistling:

    For Defend the Fort-the data pointed me to 180gr bonded JHP
  10. youngbuck

    youngbuck He's Tyrone!

    Jan 4, 2010
    Mr. Steel Head... I am trying to research and ask questions often to form a plan that works for me but I fail to recognize how using the information placed on an ammo box is a wrong way to help determine how to choose ammo? If thats the case then somebody please point me to the correct info used to determine my decisions.
  11. Ak.Hiker


    Feb 8, 2005
    Homer Alaska
    While energy info is useful there are many other factors involved in picking a SD load. The CorBon 135 grain load has more energy than a Speer Gold Dot 180 grain load but if you were looking for a load that penetrated deep and kept most of its weight than the Speer load while having less energy would be the better choice. Most full power 125 grain 357 Magnum JHP loads have more energy than the Federal 180 grain Cast Core load in the same caliber. If you were in need of a deep penetrating load for protection from heavy boned animals than the Cast Core load would be a better choice than the JHP due to the solid bullets ability to break heavy bones and keep on going into the vitals. Picking a load with a bullet that is designed for your needs is an important piece when picking a SD load.
  12. Youngbuck:

    Click on some of the links shown here for more information, but this will get you started.

    Service Pistol Duty and Self-Defense Loads


    Last edited: Jan 10, 2010
  13. Steel Head

    Steel Head Tactical Cat

    Jan 1, 2010
    A cat box in WA
    the info on the box is worthless-If the box has a gimmicky name it's coyote ammo at best:whistling:
    The above list will steer you in the right direction
    Ft lbs-BLAH
    Wonder heat seeking bullets-BLAH
    It's about a solid combination/compromise of speed,weight,and expansion

    look for the 40 tests on this sight and others-same on you tube-also the above links are good
    Last edited: Jan 10, 2010
  14. PghJim


    Apr 21, 2005
  15. .
    On second thought, maybe the information on the box is more trustworthy than information gathered from such questionable sources.
  16. Snowman92D


    Oct 6, 2001
    They perhaps fragment in ballistic gell-o, but it's not the same in human targets.

    South Bend PD adopted the 135-grain Cor-Bon .40 S&W a long time ago as their issued duty load. They wanted a semi-auto cartridge that duplicated the performance of their previously-issued revolver load, a 125-grain .357 magnum jhp, which they'd found to be highly effective in street shootings.

    Their preliminary testing showed that the 135-grain Cor-Bon came the closest to duplicating their revolver ammo, and that was the round they selected. They've had about a dozen shootings with the 135-grain Cor-Bon .40 S&W and the ammo has been extremely effective in terminating criminal violence. So much so that handgun performance is simply a non-issue with their agency.

    There is no 1-to-1 relationship between shooting gell-o and shooting violent people. Gel testing is an excellent method of doing preliminary testing of defensive ammo, but the final decision must be made on street results that haven't been cherry-picked to support someone's agenda.
  17. Ak.Hiker


    Feb 8, 2005
    Homer Alaska
    Sounds like the 135 grain CorBon would not be a bad pick as a SD carry load after all.
  18. glock20c10mm


    Dec 4, 2004
    Out West
    The 526 ft-lbs only tells part of the story in terms of penetration depth. Exactly the reason 135gr Nosler bullets don't penetrate very far from the 10mm at 1600fps and 767 ft-lbs. You also have to figure bullet constuction into the equation.

    That said, as has been mentioned by Snowman92D and AK.Hiker, the Corbon load you picked up is probably a very good performer overall. And, in the 40, I think is a particularily good choice with the right bullet design, and the Cor-Bon bullets seem to fit the bill fine.

    Good Shooting,
  19. Brucev


    Jul 19, 2009
    Just got home from a gun show and purchased one of only two boxes I saw at the whole show of Corbon 135gr jhp's. I never knew of any .40 putting up 1325 velocity and 526 energy. With those kind of numbers should I place much emphasis on over penetration or just view it as .357sig style numbers in a gun I actually own?

    Speed and energy figures are not reliable predictors of performance. That having been said, the ammo you bought should do just fine for SD/HD. Of course it might not be the best choice if you anticipate having to shoot through car doors, etc. Back in a different day and age, I saw a man who had been shot to pieces with 125 gr. JHP's fired from a .357 Magnum at a distance of about 8-9 feet. It was the biggest mess I've ever seen. I would think that those 135 gr. Corbon loads would be at least as effective. For use at distances from hard off the barrel out to say 15-20 yds., the Corbon ammo should produce very good results. Later on after you've had time to get your knowledge on, you may want to consider a heavier bullet. Something around 155-165 gr. will give a good combination of velocity (important if one expects a hollow point to open) and penetration (important as the bullet must reach vital internal organs if it is to be effective) and energy (function of bullet weight and velocity) and manageable recoil (important given the need to be able to fire rapid accurate follow-up shots). At the far end of the scale, the 180 gr. loads offered by Winchester, Speer, Federal, etc., will offer better potential penetration. The velocity and energy levels will not be as high as that quoted for the Corbon 135 gr. load, but many multiple tests indicate that these loads produce extremely good expansion and multiple reports indicate that in actual use these loads are extremely effective.