ParaGunner Posted August 22, 2010 Share Posted August 22, 2010 OK, first of all this is a Para P-16 .40cal. It has a Kart ramped barrel in it with the chamber reamed to except 1.18oal ammo, just had the gun refinished with Atranite and slide lightened by Freedom gunworks.I'm shooting 180gr lead flat point cone bullets at about 175pf. I had a little trouble when I first got the pistol back from refinish with it feeding but it cleared up after 20-30rounds and then ran good for the next 200 rounds. I took it home and cleaned it up real good. Well today I took it out and every time I tried to chamber a round it jammed with the bullet in the chamber but the case rim was stopped on the breech face,the round never made it to the extractor. Then while shooting the same thing kept happening very inconsistantly,it would do it every shot sometimes,then it would run good sometimes also not doing it at all. This was happening with all my mags. I checked to see if something was in the chamber but it looked good,the breech face looked good also. Again,every time this happened the round was angled in the chamber with the bullet inside the chamber and the case rim stopped just at the bottom of the breechface before it even touched the extractor. To clear it i just pulled the slide back a little and then it made its wat into the chamber. Does the breechface or chamber need a little polishing? Any thoughts? Sorry for the long post,just trying to descibe the conditions really well. Link to comment Share on other sites More sharing options...
Will_M Posted August 22, 2010 Share Posted August 22, 2010 It sounds like an extractor issue. Is the extractor "clocking" inside the extractor tunnel? Is it a new extractor? When I built my single stack, I had a problem similar to what you describe and it was because I hadn't tuned the extractor. Link to comment Share on other sites More sharing options...
ParaGunner Posted August 22, 2010 Author Share Posted August 22, 2010 (edited) The round is not even touching the extractor when it jams, it stops below the extractor. Edited August 22, 2010 by Roy Hess Link to comment Share on other sites More sharing options...
LT45 Posted August 22, 2010 Share Posted August 22, 2010 I had a problem similar to this with my P-16. My crimp die had backed out a bit and wasn't crimping the case enough. The case lip was hanging up on something slowing the travel into the chamber. Link to comment Share on other sites More sharing options...
GrumpyOne Posted August 22, 2010 Share Posted August 22, 2010 Check your crimp and polish the breachface... Link to comment Share on other sites More sharing options...
ParaGunner Posted August 22, 2010 Author Share Posted August 22, 2010 I'm thinking I need to Polish the breechface also. Before I had it refinished I shot a match with the same ammo and the same barrel with no problems. It's hard to believe the brass is hanging up on the new finish though. Link to comment Share on other sites More sharing options...
wide45 Posted August 22, 2010 Share Posted August 22, 2010 Shock Buff? Did you check the spring for coil bind? Dirty mags? Old mag springs? Link to comment Share on other sites More sharing options...
MTBfarms Posted August 22, 2010 Share Posted August 22, 2010 Polish polish polish. It is breaking in the gun all over again after having it finished. Link to comment Share on other sites More sharing options...
ParaGunner Posted August 22, 2010 Author Share Posted August 22, 2010 Shock Buff? Did you check the spring for coil bind? Dirty mags? Old mag springs? Yes Yes No No I'm going to Polish the breech face tonight,hopefully that fixes it. Link to comment Share on other sites More sharing options...
Joe4d Posted August 23, 2010 Share Posted August 23, 2010 Shorten your ammo, Paras run best on factory length ammo. Link to comment Share on other sites More sharing options...
ParaGunner Posted August 23, 2010 Author Share Posted August 23, 2010 Before the refinish it was running fine on 1.18oal ammo. I have another 1000 rounds already loaded to this length. Link to comment Share on other sites More sharing options...
Jim Norman Posted August 23, 2010 Share Posted August 23, 2010 New barrel? Verify it is properly ramped. Mags, make sure your followers are not worn out, replace with Arredondo and treat your mags to moly. Do make sure your extractor is not out of tune. Link to comment Share on other sites More sharing options...
Jammer1911 Posted August 23, 2010 Share Posted August 23, 2010 I agree recheck your crimp and polish, polish, polish! I disagree with Paras like factory ammo. I have had nothing but trouble with factory length ammo, but runs flawless with longer reloads. Just my 2 cents worth. Link to comment Share on other sites More sharing options...
wide45 Posted August 23, 2010 Share Posted August 23, 2010 (edited) Run it without the shock buff before you make any other changes! Definitely don't polish, or make any permanent changes until you check that first. Edited August 23, 2010 by wide45 Link to comment Share on other sites More sharing options...
wide45 Posted August 23, 2010 Share Posted August 23, 2010 (edited) New barrel? Verify it is properly ramped. Mags, make sure your followers are not worn out, replace with Arredondo and treat your mags to moly. Do make sure your extractor is not out of tune. Do not use Arredondo followers in a Para. They will not be reliable. How new are the mag springs? Did you run them before the refinish? If not, do you still have the old ones? Edited August 23, 2010 by wide45 Link to comment Share on other sites More sharing options...
wide45 Posted August 23, 2010 Share Posted August 23, 2010 Shorten your ammo, Paras run best on factory length ammo. Lots of misinformation tonight. Link to comment Share on other sites More sharing options...
ParaGunner Posted August 23, 2010 Author Share Posted August 23, 2010 Magazine followers are factory and are just over a year old. Mag springs just got installed this year and yes I used them before the refinish. I also have always ran shok buffs,never had any problems. Everything ran great before refinish. Link to comment Share on other sites More sharing options...
ParaGunner Posted August 23, 2010 Author Share Posted August 23, 2010 (edited) My ammo is 1.17-1.18oal Edited August 23, 2010 by Roy Hess Link to comment Share on other sites More sharing options...
ParaGunner Posted August 23, 2010 Author Share Posted August 23, 2010 Run it without the shock buff before you make any other changes! Definitely don't polish, or make any permanent changes until you check that first. How is running it without a buff going to help it feed? Link to comment Share on other sites More sharing options...
benny hill Posted August 23, 2010 Share Posted August 23, 2010 The buff will scrape against the slide & cause problems. If you want to run one, trim the outside of it untill it is smaller than the guide rod head. Set mag lips @ .355, correct feed ramp angel, radis breakover point in the chamber, polish it all & install ISMI springs in your mags. Link to comment Share on other sites More sharing options...
ParaGunner Posted August 23, 2010 Author Share Posted August 23, 2010 How do you tell if you have the correct feed ramp angle? Link to comment Share on other sites More sharing options...
Jim Norman Posted August 23, 2010 Share Posted August 23, 2010 New barrel? Verify it is properly ramped. Mags, make sure your followers are not worn out, replace with Arredondo and treat your mags to moly. Do make sure your extractor is not out of tune. Do not use Arredondo followers in a Para. They will not be reliable. How new are the mag springs? Did you run them before the refinish? If not, do you still have the old ones? Maybe yes, maybe not, I changed my followers earlier this year to Arredondos. My factory followers were worn out. You do need to be specific. Don't use S-I followers, they WILL NOT work, if they would, I'd have Bolen followers. I definitely recommend Treating your mags to moly and graphite. Link to comment Share on other sites More sharing options...
Bob DuBois Posted August 23, 2010 Share Posted August 23, 2010 Try a drop of oil on the ramp and the opposite side of the breech face away from the extractor, you'll need to polish the ramp but even then a drop of oil will let it go ahead and move. I use a little extra oil on all moving parts till the finish settles in. Link to comment Share on other sites More sharing options...
ParaGunner Posted August 23, 2010 Author Share Posted August 23, 2010 The buff will scrape against the slide & cause problems. If you want to run one, trim the outside of it untill it is smaller than the guide rod head. Set mag lips @ .355, correct feed ramp angel, radis breakover point in the chamber, polish it all & install ISMI springs in your mags. I did radius the breakover point into the chamber last night. Mag feed lips are. 360-.370 and mags already have ismi springs. Should I Polish the breechface? How do I tell if the feed ramp angle is right? Link to comment Share on other sites More sharing options...
ParaGunner Posted August 24, 2010 Author Share Posted August 24, 2010 Polished the part of the breechface where the round slides up and broke the edge to the entrance to the chamber ,then polished it. I loaded it several times from slide lock and regularly with no jams, which it wouldn't do before. I'm going to do some live fire tomorrow, hopefully I fixed it . Thanks everyone for your help. Link to comment Share on other sites More sharing options...
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