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b18prl

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Posts posted by b18prl

    Recoil spring weight Stock 2 vs Limited Pro

    in Tanfoglio (EAA / IFG)

    Posted

    Kind a long story with some low percentage issues I was dealing with starting last summer...

    Background: I've used the same mags for EVERYTHING in my now 15 months of shooting Tanfos. Dry fire, live fire, matches, everything. I normally run 147's at 135pf. My dillon powder bar drifts downwards very slowly, maybe 10k rounds for it to drop a tenth on the scale.

    With my setup last year, with a new 9lb spring I'd be good until about 3k rounds and then would have intermittent failures to go into battery. Like one every few hundred rounds to start. Top round would strip, just not quite make it all the way to battery. A couple times it wouldn't quite strip all the way, but a tap on the slide would get it moving.

    So, I started replacing the 9lb at about 3k rounds... no problems for the rest of the year.

    Cut to FL Open this year. I knew I had "excessive" mileage on my recoil spring, and would have changed it, but didn't have an extra, and handn't been having any problems, so decided to let it ride. Also I hadn't tweaked my powder charge for a while, knew it should go back up, but again, stuff had been working 100% in practice, so I decided to let it ride and make tweaks after the match. I was chronoing 130pf right before the match. Unfortunately I had a stage train wreck starting with a new type of malfunction where the old case is ejected, new round is on the way into the chamber, but the round below that one is pushed forward into the feedramp, stopping the slide way out of battery... It never happened before then. I was late in the mag anyway, and in real time feels like the slide locks open... racking it puts you into a double-feed-like situation. It wasn't pretty.

    So anyhow, I kind of thought that was the mags; they are worn, original springs, etc, so when I get back, I grab some brand new mags and head to the range... I get the above new kind of malfunction about halfway through every single magazine.

    I talked to a friend who has had the opportunity to do a lot of testing with these guns in various setups, and his opinion was that the cause was basically a slide velocity problem in conjunction with the amount of pressure my old mag springs were putting on the stack of rounds in the mag. He recommended a bump back to 135pf and go to a 10lb recoil spring. Done. I had zero issues with this setup, until Area 6, where I had a nice stovepipe that cost some time on a very fast classifier stage, and pretty much wrecked that stage too, but anyway... Always fun to discover new ways to malf at major matches. So far the stovepipe is still a one-off thing, so I'll not worry about it unless it repeats.

    I have about 3500 rounds with the 10lb spring, and no failures to go into battery all the way, and none of the second round of the mag going into the feed ramp type failures yet either.

    How long you loaded your bullet? I had the same problem in my stock2 I'm using Zero 147 JHP loaded to 1.13" before and it's been giving me the same issue you're discriping so I tried loading it shorter to 1.11" and now it's running 110% now, give it a try and good luck.

    Kudos to C-More on a positive service experience

    in Open Pistols

    Posted

    I'd like to share my positive experience as well, I sent in my Serendipity to re-bodied but dot didn't turn on after I got it back. I called C-more about the issue and was told to sent it back in. I sent it back in last week and just got it in the mail today, after the phone call with C-more they replaced the switch and even put a fresh battery in it for FREE!!

    Kudos>>>>>>c-more

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