Deputy25
Member
My P7 PSPs work just fine with 147. When I carry one of them I load it with Federal 9BPLE.
Hk p7 ????
- Thread starter rcmodel
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Kurtz worked for HK and is extremely knowledgeable. As close as you're going to get to "facts" from HK regarding P7's and 147gr ammo. It also speaks to the need for the gas tube scraper, although not directly. The bottom line is that you run 147gr in your P7 at your own risk (reliability). I do not use it for carry when carrying one of my P7's.
**NOTE** That is an old thread, so don't go posting in it and inadvertently create a *NECRO-Thread.
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That sounded like a pretty definitive answer about the problem with 147gr slugs and also a reminder not to shoot lead bullets in your P7.
An important point he brings up which hasn't been mentioned here yet is the cleaning of the gas piston. It should only be done with a nylon brush and solvent...never a metal brush. It is one of those parts where over cleaning is a bad thing. What you want to avoid is rounding off the edges of the rings on the piston...as it compromises your gas system
usp9
Member
That is a true statement, however the fact remains that HK has yet to make a public comment on 147gr ammo problems. I might add that IIRC Bruce Gray, who also worked for HK and is pretty knowledgable, used 147gr ammo in competition. He has participated in this debate on HKPro on occation.
This is a debate that will continue forever, no definitive answer, as there are two sides that can neither prove nor disprove their position. It's a personal choice. An opinion.
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I believe they even recommend against using ANY type of hard-bristle brush, including nylon. You are supposed to just soak it in solvent and/or oil and wipe it down the best you can with a patch. I use Q-tips to help get in between the rings a bit better when there is excessive build up. Been tempted to use a nylon brush, but I'll stick with what H&K tells me to do. It's a little more time consuming to do it the right way, but I find that I can still get the piston VERY clean if I really want to.
Use a super hard scraper but don't use a nylon brush.
Can use 147 grain bullets, H&K does not recommend.
This thread gets more bizzare with each passing day.
I'm going to stick with my .270 nylon brush and my Otis scraper, and since I hate 147 grain 9mm loads, no worries there.
Can use 147 grain bullets, H&K does not recommend.
This thread gets more bizzare with each passing day.
I'm going to stick with my .270 nylon brush and my Otis scraper, and since I hate 147 grain 9mm loads, no worries there.
usp9
Member
One of my P7s had a heavily carboned piston that was made almost new by means of a $1.00 purchase from Walmart. I bought a thin glass vase, about 7" tall and 1" in diamenter. I would fill the vase with Slip 2000 Carbon Killer and simply hang the slide on the vase, with the piston inside, and let the Carbon Killer do it's work. After a few "treatments" and soft brushing with a toothbush, the piston looked 100% better.
Just a suggestion for a cheap, easy and effective way to pamper the piston. When I'm finished with the soak, I pour the liquid back into the original jar and reuse it over again. Very little is lost. Here's a pic of the cleaned piston. No before pic, but it was bad.
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That is a great suggestion. That has to be the cleanest gas piston I've ever seen.usp9 said:
I gather you were being facetious, but to avoid confusion for the reader, I'll point out that the hard scraper is for the gas cylinder; while the soft brush is for the gas pistonOnmilo said:
Huh? How exactly is it "bizarre"? The scraper is for the gas cylinder and the soft brush or dipping is for the gas piston.
The piston is pictured above in extremely clean condition. The gas cylinder is what the piston goes into and is not pictured in this thread.
rcmodel
Member in memoriam
Well, I want to thank everyone for all the great replies and suggestions.
So, I told my buddy with the P7 to just get a cheap Harbor Freight sand-blaster gun and Gofer It when the P7 stops up with carbon.
It is way cheaper then the official HK carbon scraper tool he doesn't want to spring for!!
rc
So, I told my buddy with the P7 to just get a cheap Harbor Freight sand-blaster gun and Gofer It when the P7 stops up with carbon.
It is way cheaper then the official HK carbon scraper tool he doesn't want to spring for!!
rc
rcmodel
Member in memoriam
Well, it is an HK.
What could possibly go wrong?
And if it does, he can call customer service, and they won't help him.
Because they are HK, You suck, and They Hate You!
http://larrycorreia.wordpress.com/2007/10/09/hk-because-you-suck-and-we-hate-you/
rc
What could possibly go wrong?
And if it does, he can call customer service, and they won't help him.
Because they are HK, You suck, and They Hate You!
http://larrycorreia.wordpress.com/2007/10/09/hk-because-you-suck-and-we-hate-you/
rc
USP9 has about the best suggestion seen here yet.
The same carbon blaster can be sprayed on a nylon brush & swabbed into the gas cylinder & allowed to soak, then patched out.
It will also loosen the carbon deposits in the port.
And yeah, I'm way too cheap to spend $40 on a piece of hardened steel.
The same carbon blaster can be sprayed on a nylon brush & swabbed into the gas cylinder & allowed to soak, then patched out.
It will also loosen the carbon deposits in the port.
And yeah, I'm way too cheap to spend $40 on a piece of hardened steel.
Peter M. Eick
Member
USP9,
That is one clean piston. Mine only comes out that clean if I dump it in the ultrasonic.
Regarding the 147's. I load mild 147 XTP's and find they are exceptionally accurate. Better then almost any other bullet. Expensive, but extremely accurate in my 3 P7's. I would not hesitate to shoot 147's with mild reloads.
That is one clean piston. Mine only comes out that clean if I dump it in the ultrasonic.
Regarding the 147's. I load mild 147 XTP's and find they are exceptionally accurate. Better then almost any other bullet. Expensive, but extremely accurate in my 3 P7's. I would not hesitate to shoot 147's with mild reloads.
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