Pardini GT9 function question...

jakfrost

jakfrost

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Shooting the GT9 today and for the first time ever...the slide failed to close completely after almost every round. Worked perfectly last week, this week, not so much.
The loads were a new batch but can't see that having created the problem, ( 5.7grs of HS-6 behind 124gr FMJ-RN ), since there was no problem feeding or initial cycling. Just the slide failing to go completely into battery.
I'm guessing the slide return spring has suddenly decided to 'weaken'...? Overnight? Seems odd, but asking the question anyway. Everything else checks normal, slide runs smoothly by hand...?

Jim
 
jakfrost said:
Shooting the GT9 today and for the first time ever...the slide failed to close completely after almost every round. Worked perfectly last week, this week, not so much.
The loads were a new batch but can't see that having created the problem, ( 5.7grs of HS-6 behind 124gr FMJ-RN ), since there was no problem feeding or initial cycling. Just the slide failing to go completely into battery.
I'm guessing the slide return spring has suddenly decided to 'weaken'...? Overnight? Seems odd, but asking the question anyway. Everything else checks normal, slide runs smoothly by hand...?

Jim
Click to expand...
Pardini Functionality rears its ugly head.

I believe the springs are to light on these. Mags lots have a little tab that will retain the ammo but due to the light spring will not close it. I ended up tweaking all my mags.
These guns are horrendous when it comes to fouling. Clean it every 100 rounds. I noticed my pardini started to work better after about 500 rounds.
 
I used the barrel and without exception, the reloads drop into the chamber with a satisfying 'clink'...so, I'm back to suspecting the slide return spring. Unless, as 'Happypillz' pointed out, the magazine spring tension could be sufficiently strong to prevent the round from feeding easily...food for thought!
 
jakfrost said:
Shooting the GT9 today and for the first time ever...the slide failed to close completely after almost every round. Worked perfectly last week, this week, not so much.
The loads were a new batch but can't see that having created the problem, ( 5.7grs of HS-6 behind 124gr FMJ-RN ), since there was no problem feeding or initial cycling. Just the slide failing to go completely into battery.
I'm guessing the slide return spring has suddenly decided to 'weaken'...? Overnight? Seems odd, but asking the question anyway. Everything else checks normal, slide runs smoothly by hand...?

Jim
Click to expand...

I have a Pardini GT 6 in 9mm. I also use 124gr and HS6. 5.7 gr sounds a bit light to me. I use 6.3 gr. When I was working up I had a few of what you describe at 6.0gr. This sounds like the slide is not going back quite far enough to push the cartridge home. Remember that the chamber of a Pardini has very tight tolerances and even a tiny amount off can lead to feed problems. I have settled on using American Eagle and Blazer brass only. This brass seems a fraction thinner than some others and seems to feed the best. I now have very few problems. I also set the length at the longer end of the range which generally seems to improve feeding in most guns. Also if the gun is new it will take a little time to fully break in. Again one of the reasons it is so accurate is the tight tolerance. Stick with it. They are truly awesome handguns.
 
grinder08 said:
I have a Pardini GT 6 in 9mm. I also use 124gr and HS6. 5.7 gr sounds a bit light to me. I use 6.3 gr. When I was working up I had a few of what you describe at 6.0gr. This sounds like the slide is not going back quite far enough to push the cartridge home. Remember that the chamber of a Pardini has very tight tolerances and even a tiny amount off can lead to feed problems. I have settled on using American Eagle and Blazer brass only. This brass seems a fraction thinner than some others and seems to feed the best. I now have very few problems. I also set the length at the longer end of the range which generally seems to improve feeding in most guns. Also if the gun is new it will take a little time to fully break in. Again one of the reasons it is so accurate is the tight tolerance. Stick with it. They are truly awesome handguns.
Click to expand...

Thanks for you input...I agree that 5.7 is at the light end, I was trying to see what the lightest, accurate, load might be but didn't expect the 'fail' to be the chambering, more likely the ejection, no? The slide must go fully rearward to fully eject the spent case I would assume, and so would come forward based only on the energy of the compressed 'return' spring one would assume...
I have been using the only brass I could find, commercially sold once fired WW. I can't even buy factory ammo in 9mm here at the only source...Can Tire. So...I'll go back to some of my previous loads at 6.0 and 6.2 and see if the issue goes away.
 
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