stardust tommy Posted March 9, 2017 Share Posted March 9, 2017 Hi I have shot hundreds of rounds without missfires, carmonized hammer, stock mainspring, full compression (over 6 lbs triggerpull with 11lbs rebound spring) yesterday we had a local pin match in an old fortress (colder, more humidity) and we had sudently a lot of misfire in 3 revolvers, al set up the same exept for 1 mod 64 with standard hammer. I shot a 686-5 wich didn't misfire for the last thousand rounds, but I just switched to an C&S extended firingpin to test with less mainspringtension, but I schot with full compression of the mainspring. I think it is a primer problem, al revolvers shot with primers of the same lot Link to comment Share on other sites More sharing options...
alecmc Posted March 9, 2017 Share Posted March 9, 2017 How cold we talking ? I've successfully made Federal primers go bang in temperatures between. 20-105 degrees. Link to comment Share on other sites More sharing options...
Alaskan454 Posted March 9, 2017 Share Posted March 9, 2017 Unless you have your hammer force at the ragged edge of reliability it shouldn't give you that much difference. I've tested the SPP from around 0 to 80 F in the last few months. Are you sure the primers are fully seated? Link to comment Share on other sites More sharing options...
stardust tommy Posted March 9, 2017 Author Share Posted March 9, 2017 primers are fully seated (on a RL550) it wasn't that cold +- 16°C (60°F) today I tested Magtech and federal primers and no problems... maybe just a bad lot of primers? gr T Link to comment Share on other sites More sharing options...
VanMan1961 Posted March 9, 2017 Share Posted March 9, 2017 is it possible that the cooler temperatures may have affected the oil/lube used on your handgun internals? I learned early not to over-lube Link to comment Share on other sites More sharing options...
alecmc Posted March 10, 2017 Share Posted March 10, 2017 60 degrees cold? You must live in Nevada or something. Link to comment Share on other sites More sharing options...
Alaskan454 Posted March 10, 2017 Share Posted March 10, 2017 48 minutes ago, alecmc said: 60 degrees cold? You must live in Nevada or something. +1 Match this Saturday will be 20-30. I'd suspect ammo or gun before the primers. In the guns I've lightened I've had zero changes in sensitivity between Federal, CCI, Remington, or Winchester in your temperature range. Link to comment Share on other sites More sharing options...
PatJones Posted March 10, 2017 Share Posted March 10, 2017 I had similar problems with a batch of ammo I loaded on my 550. I believe my shell plate was tilting slightly. I am much better about making sure the shell plate is a tight as possible, but I still seat primers by hand for the .38. Link to comment Share on other sites More sharing options...
Carmoney Posted March 10, 2017 Share Posted March 10, 2017 10 hours ago, VanMan1961 said: is it possible that the cooler temperatures may have affected the oil/lube used on your handgun internals? I learned early not to over-lube This was the first thing that occurred to me also. Link to comment Share on other sites More sharing options...
stardust tommy Posted March 10, 2017 Author Share Posted March 10, 2017 I use a little bit of PTFE grease inside... maybe it is just a little to thick when I adjust my 550 I put 4 cases in the shellholder, turn the screw down to where the shellplate won't turn anymore, back up a tiny bit to when the shellplate starts to turn again and lock the locking screw. this way the shellplate is adjust to that batch with the same headstamp... gr T Link to comment Share on other sites More sharing options...
toothguy Posted March 10, 2017 Share Posted March 10, 2017 Check to see if the firing pin spring is broken. It can break in half and partially collapse giving some return, but with increased resistance. For all gun lube inside and out I use mobile 1 synthetic oil. Link to comment Share on other sites More sharing options...
stardust tommy Posted March 10, 2017 Author Share Posted March 10, 2017 (edited) these are the primers that went bang from the first time, good and deep indent http://i64.tinypic.com/30wovh5.jpg[/IMG] we have problems with frame and hammer mounted firingpins... primers are from 1 lot gr tom Edited March 10, 2017 by stardust tommy Link to comment Share on other sites More sharing options...
Carmoney Posted March 11, 2017 Share Posted March 11, 2017 (edited) Let me tell you the correct place to use grease...in the wheel bearings of your vehicle. Not in your revolver. ? Edited March 12, 2017 by Carmoney Link to comment Share on other sites More sharing options...
PatJones Posted March 11, 2017 Share Posted March 11, 2017 Let me tell you the correct place to use grease...in the wheel bearings of your vehilcle. Not in your revolver. [emoji4]I grease the double action sear surfaces and the trigger/cylinder stop interface. The rotating parts get oil. Link to comment Share on other sites More sharing options...
Carmoney Posted March 12, 2017 Share Posted March 12, 2017 ? Link to comment Share on other sites More sharing options...
MrDanCheck Posted April 21, 2017 Share Posted April 21, 2017 Ive had this happen 4 years ago. I was shooting in the spring and shot a match Saturday and it was sunny and 60 degrees out. Gun ran fine. Sunday however it was 30 degrees in the morning and I got miss fires in the gun on the same ammo. I changed the strain spring and rebound spring to wolf factory springs(i happened to carry them with me) and the gun ran the rest of the day without issues.. cold weather effects metal and springs. Sent from my SM-G935V using Tapatalk Link to comment Share on other sites More sharing options...
stardust tommy Posted April 21, 2017 Author Share Posted April 21, 2017 I've been shooting the same gun with the same primers without problems for about 5-600 rounds... Link to comment Share on other sites More sharing options...
JON Posted April 21, 2017 Share Posted April 21, 2017 It is the primers. They do not function as they should in the cold. Please send all the leftovers to me. Link to comment Share on other sites More sharing options...
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