Grand Power P40 10mm -- meh.

[10Tens]

Thanks for the help on this!

  I bet that spring is way much for the GP pistol. I think the red would probably be fine for most 10mm rounds including some nukes. In my case, I went down on the spring even more to a cut-down CZ-75 Wolff spring in my 9mm. The red was really too much for 9mm in my experience!

I'm actually running the silver now, a little harder to re-assemble but it seems perfect for my purposes.

I'm actually gonna test the red vs. The silver side by side soon.
After my mag springs were shortened and Windows chamferd ,  I can easily load all mags to full 14 round count. The gun still drops mags out occasionally and fails to lock slide open occasionally.  Ughh.

[PCFlorida]

I felt like some of my hotter loads were battering the frame some, switched to the silver and no more problems with that. The slide was coming back pretty hard.

[10Tens]

Well maybe I just leave it in. I just won't ever clean it again! Lol.

[PCFlorida]

So yesterday I cleaned the GP. Has anyone noticed that the gun with the rotating barrel seems to stay much cleaner or is it my imagination?

Anyway, I reassembled it on the first try this time, and it was quick and easy. I'm going to try it again this weekend and if I still have the same result I will document the steps and post it.

[Ten2six]

Mine came home pretty dirty the last time out, using mostly power pistol loads.

[PCFlorida]

I've shot a ton of powder pistol, but have been shooting Lovex Heavy Pistol lately. Replica of AA #9, great powder. I find it performs better for me on heavy loads, especially using 200 grains bullets.

[spencerhut]

I've shot a ton of powder pistol, but have been shooting Lovex Heavy Pistol lately. Replica of AA #9, great powder. I find it performs better for me on heavy loads, especially using 200 grains bullets.

Don't tell people about the Lovex aka Shooters World . . . it's super secret.
Everyone I tell about Lovex/Shooters World powder seems to think I'm trying to get them to drink Billy Beer. Oh well, more for us.

[PCFlorida]

I've shot a ton of powder pistol, but have been shooting Lovex Heavy Pistol lately. Replica of AA #9, great powder. I find it performs better for me on heavy loads, especially using 200 grains bullets.

Don't tell people about the Lovex aka Shooters World . . . it's super secret.
Everyone I tell about Lovex/Shooters World powder seems to think I'm trying to get them to drink Billy Beer. Oh well, more for us.

I buy it in 8 lb containers

[PCFlorida]

I've shot a ton of powder pistol, but have been shooting Lovex Heavy Pistol lately. Replica of AA #9, great powder. I find it performs better for me on heavy loads, especially using 200 grains bullets.

Shortly after that post, I was at our rental house (April 24th) and was attacked by the ex renters 2 pitbulls. My arms were both very mauled and it took me months before I was able to even shoot a 9mm again. The point is, I haven't shot the Grand Power in so long I can't remember how it was that I got it so quickly together. Once I figure it out again, I will post