johnbu Posted January 10, 2015 Share Posted January 10, 2015 OK, here's the deal. I bought a new .40sw witness match last year. Took it apart, following instructions here, polished up plunger, trigger bar, firing pin and slightly chamfered the firing pin keeper to make racking smoother. All was done just to make it a more enjoyable range toy. Then a buddy invited me to a local steel challenge. I tried an xdm-40, but it's just nowhere near as easy / fun as the match. So, I used that and while it's easier to time me by phases of the moon, it has been a lot of fun. So, what's the issue? Well, I'm uncomfortable speed drawing from the holster in SA. Yeah, I know... Anyway, ebay provided a kit of parts from a 9mm witness P - trigger on the bar, sear assembly, misc pins/springs and a hammer w interrupter and long curved strut. After scratching my head over that, gunbroker had an auction for a kit of new parts bought from Henning to convert a hunter to DA. Not "needing" them I bid and got them fot the oppening bid of $0.01. Finally, to the point. I put the new trigger onto the ebay bar, keeping the original SA assembly intact. Then used the new std hammer and interruptr with the match short strut and factory spring. The new parts were polished prior to installation. Well, the SA trigger is still pretty good, but not as good as before. But the DA is ... not good. Heavy and gets heavier stacking at the end. Yuck. Oddly, inspecting the "P sear assembly to the match showed differences, so they were swapped - yielding a slight improvement. But still sucky. Holding the trigger back, the hammer can be cycled without binding, but that spring is stout. I ordered a hammer spring kit from Henning, along with his firing pin and sight set thinking that will make it all better. But, I keep reading about improvement from changing hammer and sear. So... what amount of improvement is gained from hammer and sear? Is the bulk gain from the hammer spring? Or changes in geometry in the sear and hammer? Is changing to lower power trigger return and sear springs worth the effort? Sorry for the rambling! John Link to comment Share on other sites More sharing options...
kneelingatlas Posted January 10, 2015 Share Posted January 10, 2015 Quick question before I get started: when you draw in SA, you have the safety engaged right? Link to comment Share on other sites More sharing options...
kneelingatlas Posted January 10, 2015 Share Posted January 10, 2015 With regards to your DA woes: the hammer doesn't really effect the DA pull weight, it's all about the plunger spring, trigger return spring and the hammer spring. The SA breaks in the hammer and sear, but the DA shot breaks on the disco and the trigger bar. Link to comment Share on other sites More sharing options...
johnbu Posted January 11, 2015 Author Share Posted January 11, 2015 Yes, guns with safety have them on and the trigger finger is indexed until sights are on target, etc. I just have a phobia to work through having a childhood buddy's dad shoot himself in the calf drawing from the holster. Those 40 year old memories seem to lock me up and make that first shot very ... deliberate. This is my attempt to "get over it". But enough of my quirks! Ok, I follow the springs are the important part as I initally suspected, prior to over analyzing. Today I polished the spare plunger and put a weaker spring on, but didn't install. Could you teach a guy what you mean about the DA breaking on the disco and trigger bar? Heck, I cannot even find the disconnecter on the parts diagram. Thanks! Link to comment Share on other sites More sharing options...
kneelingatlas Posted January 11, 2015 Share Posted January 11, 2015 This is the part I call the disco (disconnect or interruptor): http://www.brianenos.com/forums/index.php?showtopic=191773&p=2138255 This tuning thread is for the CZ DA, but it's close enough to get you started. If you read from the beginning you should know what to do. Link to comment Share on other sites More sharing options...
johnbu Posted January 11, 2015 Author Share Posted January 11, 2015 Ok, thanks. Just finished reading that whole thread. Whew! Good stuff. I'll have to do a bit more polishing when the henning hammer springs come. Especially on the disco. Link to comment Share on other sites More sharing options...
jmbaccolyte Posted January 11, 2015 Share Posted January 11, 2015 (edited) Johnbu- I much prefer the trigger on a good SA over a DA/SA or a striker fired pistol. I'd buy a holster that covers the trigger, work through thousands of repetitions drawing the pistol from the holster while gradually increasing the speed while keeping your finger outside the triggerguard until you shove the pistol toward the target and only then clicking the safety off and placing your finger on the trigger. However, my current employer issues striker fired pistols and although they only hire former law enforcement or ex-military personnel, three people (out of 700) have shot themselves in the leg while qualifying in the last thirty months so I understand how you feel. I don't usually gamble for money, but I would be willing to bet that those guys didn't practice much if at all. On the other hand, with proper practice its perfectly safe if you're willing to put in the time and effort. There's a lot of truth in the old joke in which a tourist asks a New York resident how to get to Carnegie Hall and the resident responds, "Practice, practice, practice." Edited January 12, 2015 by jmbaccolyte Link to comment Share on other sites More sharing options...
johnbu Posted January 11, 2015 Author Share Posted January 11, 2015 I hear you with my ears and brain, but the gut is still holding some reservations! I just have to work through it. On holsters, is blade tech speed rig a decent one to get? Link to comment Share on other sites More sharing options...
johnbu Posted January 13, 2015 Author Share Posted January 13, 2015 The parts from Henning came in today. Pretty quick. Thanks. I followed the delivery schedule, so had it apart and spent time polishing bits up better and putting in a click bic spring while waiting for the post. The firing pin channel was pretty nasty and from reading the linked post above, there were spots I missed. Then put in the new parts, 13lb spring, Henning firing pin and henning FO sight set. Wheee, DA is now much nicer. Smooth and manageably light. SA is not a lot different than SA only, a little worse but not much, probably due to the extra polishing. Wish I had a trigger scale, but it feels nice. Checked that it fired by loading primered empty cases. It chambered them from the mag (only one in the mag at a time) and popped 8 primers in DA mode. Hardest issue was installing the new sights. Tight. Anyways, just wanted to update and give a thanks Link to comment Share on other sites More sharing options...
kneelingatlas Posted January 13, 2015 Share Posted January 13, 2015 Glad to hear it's working out! Link to comment Share on other sites More sharing options...
Endall Posted January 28, 2015 Share Posted January 28, 2015 Do you want to sell the Match trigger? I want to convert my Limited Pro to SA. Like the SA trigger better than the DA/SA. Link to comment Share on other sites More sharing options...
johnbu Posted January 28, 2015 Author Share Posted January 28, 2015 Sorry Nope, aside from having " gun hoarder tendencies", I plan on converting back at some point. Link to comment Share on other sites More sharing options...
Endall Posted January 28, 2015 Share Posted January 28, 2015 The parts listing at EEA has changed. Is this the 37.00 trigger in the current parts diagram? Link to comment Share on other sites More sharing options...
Nealio Posted January 28, 2015 Share Posted January 28, 2015 No that's the DA trigger I'm pretty sure Link to comment Share on other sites More sharing options...
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