likes / dislikes on the GRAND POWER P40 10MM

[10Tens]

Mine is still 700.00 paperweight. Ughh.. Looking at XD now.

[Bluefish]

So I havent been on here in awhile, really wondering what makes these and the xdm better than my old g29 and g20?
   other than a lone wolf barrel on the 29 they are stock and they shoot when I pull the trigger,
I dont currently reload and I have not noticed any brass issues except one box of 165gr hp underwoods that I honestly believe were over stuffed.
     I am itching for another 10mm but when I look at my delta elite, limited pro, and my 2 glocks I have a hard time finding a "niche' that needs filling.
      At this point, those polymer match and match pro look as fun as anything.

     Russ

[sqlbullet]

The big difference in the Grand Power is the rotating barrel locking system.

The concept of rotating barrel locking was originally patented, i believe, by JMB himself in 1897.  However, early implementations were finicky and reliability depended on lots of good lubricant.  More recent designs that use this system include the Beretta Px4 Storm and the Boberg XR9.

GP Designer Jaroslav Kuracina has a fresh look at the concept and controls the barrel rotation with a large, wide cam surface in the barrel interfacing with the top of the slide stop pin.  Other designs have typically used some kind of pin or post running in a groove milled in the barrel.  The GP's larger engagement area spreads the friction out in a way that positively impacts reliability.

Rotating barrel designs typically take more energy and longer unlock time than a tilt link system, while at the same time traveling less distance to the rear.  This reduces felt recoil and allows the designer more room in the action, or a shorter action (See the Boberg).

Additionally, the GP40-10mm has a interesting take on the thumb safety that I think I like.  Up is safe and supports condition 1 carry.  Middle is off safe and traditional SA fire, or DA/SA if the hammer is down for the first shot.  De-cocking is possible by sweeping the safety lever down, and the lever can be left down making the gun operate DAO.  As far as I know this is the only gun that allows this DAO operation mode in conjunction with condition 2 and condition 1 carry.

Shooters of the P40-10mm suggest that felt recoil is more in line with a 9mm shooting +p ammo.

The Grand Power designs have been badged by STI in the past as the GP5 and GP6.  I am not sure what lead to STI moving away from Grand Power.

The Glock vs XD is an old debate, and IMHO there is no compelling reason for someone invested in the Glock eco-system to look to the XDm.  I have an XD in my safe in 9mm and it is a great gun.  But before he arrival of the XDM 10mm, like you, I have a Glock 20 SF and a Glock 29, along with 9X25 barrels for both of them, and 15-20 magazines, including 4 that are altered to use the KRISS mag extensions making them 33 round mags.  Fully loaded out I think I could shoot 300+ rounds from my G29 before I had to re-stuff a magazine.

If I were shopping today for a polymer full size striker fired handgun as my only 10mm gun, I would very likely end up with the 4.5" XDm.

The Grand Power is the gun I would be most inclined to take a chance on right now.  I have been shopping them on Gunbroker and trying to decide how to break the news to my SO.

[Bluefish]

The big difference in the Grand Power is the rotating barrel locking system.

The concept of rotating barrel locking was originally patented, i believe, by JMB himself in 1897.  However, early implementations were finicky and reliability depended on lots of good lubricant.  More recent designs that use this system include the Beretta Px4 Storm and the Boberg XR9.

GP Designer Jaroslav Kuracina has a fresh look at the concept and controls the barrel rotation with a large, wide cam surface in the barrel interfacing with the top of the slide stop pin.  Other designs have typically used some kind of pin or post running in a groove milled in the barrel.  The GP's larger engagement area spreads the friction out in a way that positively impacts reliability.

Rotating barrel designs typically take more energy and longer unlock time than a tilt link system, while at the same time traveling less distance to the rear.  This reduces felt recoil and allows the designer more room in the action, or a shorter action (See the Boberg).

Additionally, the GP40-10mm has a interesting take on the thumb safety that I think I like.  Up is safe and supports condition 1 carry.  Middle is off safe and traditional SA fire, or DA/SA if the hammer is down for the first shot.  De-cocking is possible by sweeping the safety lever down, and the lever can be left down making the gun operate DAO.  As far as I know this is the only gun that allows this DAO operation mode in conjunction with condition 2 and condition 1 carry.

Shooters of the P40-10mm suggest that felt recoil is more in line with a 9mm shooting +p ammo.

The Grand Power designs have been badged by STI in the past as the GP5 and GP6.  I am not sure what lead to STI moving away from Grand Power.

The Glock vs XD is an old debate, and IMHO there is no compelling reason for someone invested in the Glock eco-system to look to the XDm.  I have an XD in my safe in 9mm and it is a great gun.  But before he arrival of the XDM 10mm, like you, I have a Glock 20 SF and a Glock 29, along with 9X25 barrels for both of them, and 15-20 magazines, including 4 that are altered to use the KRISS mag extensions making them 33 round mags.  Fully loaded out I think I could shoot 300+ rounds from my G29 before I had to re-stuff a magazine.

If I were shopping today for a polymer full size striker fired handgun as my only 10mm gun, I would very likely end up with the 4.5" XDm.

The Grand Power is the gun I would be most inclined to take a chance on right now.  I have been shopping them on Gunbroker and trying to decide how to break the news to my SO.

Great post, packed with stuff I did not know. I will have to look into the grand power in the near future.

   Thanks, Russ

[Keiichi]

Bluefish, it sounds to me like you need a change of pace, rather than another 10mm pistol. How about a carbine?

There are actually a lot of options on the market, from the MechTech accessory to the RONI to the Kriss to the HiPoint to a myriad of AR-type rifles.

A 10mm carbine is a joy to shoot.

Food for thought.

[Kenk]

Yep, will be picking up a MechTech or HiPoint myself, really looking forward to a 10 Carbine 😀

[PCFlorida]

Mine is still 700.00 paperweight. Ughh.. Looking at XD now.

So why is yours still a $700 paperweight? Did you have the mag drop issue, or was it repaired and still happened, or...?
Thank you!

[Zathras]

New to forum (and to 10mm).  GP40 is my first foray into the 10mm world.

I do like my CZ DA/SAs, and wish they made a 10mm.  The GP40 looked like the closest thing I'd find to that, so I gave it a whirl.

I like mine - grip bite is a bit too aggressive, but I'm managing.  As others have said, the disassembly / reassembly takes some practice.  I've not had the mag drop issue, but I haven't tried anything over 180gr or any hot loads.  Bought mine in late Nov, so maybe I have the 'magwell fixed version'.  Mag release spring is very stiff.

I've only shot factory so far - maybe 150 rounds, with about 100 in FMJ (S&B and Magtech) and 4 different defensive loads.  I have some 200gr projectiles that I was going to handload.  Used to loading .40.  Now that I have some fired brass, I can give it a shot.

135gr Corbon (1400+ fps) is very fast and very loud.  It shot the most consistent (for me, of the 4 HP brands I tried), tested at 7 yards yesterday.  Large, clean holes.  Apart from the initial flyer that surprised me, it was good.  The Fed Hydrashock was pretty consistent as well, but a lot quieter and the brass mostly landed at my feet.  In any case, I have some more testing to do.

Anyone had the issue of the last round in the magazine failing to chamber reliably?  I've had this a couple times, and is currently the only issue I find disconcerting, to where I'd not trust it in a defensive situation yet.  I only have 2 mags, and it happened only 2 times yesterday, which is less often than the first range trip (mostly with Magtech FMJ).  It might be a breaking-in thing.

Holster is still up in the air - would appreciate recommendations.  If I did carry it, it'd likely be OWB camping/in bear country - not CC.

[10Tens]

Mine is still 700.00 paperweight. Ughh.. Looking at XD now.

So why is yours still a $700 paperweight? Did you have the mag drop issue, or was it repaired and still happened, or...?
Thank you!

Yes. My P40 still drops mag now and then when firing hot loads. Been back twice for repair work. Could never trust it for a carry gun. Carry my tried and true S&W 1076.

[PCFlorida]

Man, that is unfortunate. Have you contacted Eagle Arms for a replacement? Who did the warranty work?