FX trigger upgrade journey

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bchannell

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Nov 1, 2020
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Parkersburg, WV USA
I've been trying out different trigger setups for my two Royale 400's and having some fun. I decided to put a Boss trigger in one and leave the other one stock and tune them both to the best of my abilities. Here are the results after one day of tuning.
Boss trigger....well getting it in and even close to ready to tune is a pain. I've found that the adj screw in the intermediate lever is used to get the sear to trip within the adjustment range of the first and second stage screws on the trigger lever. Once properly set, you have a very narrow range of adjustment of stages. I also had some binding on the housing that needed attention. The best I got was a miniscule 1st stage and a solid wall with about 10oz trigger. Good but not match by any means. There is no return of 1st stage, but I'm pretty sure I can adjust that in once I get it properly tuned. This is one weird trigger design, but I think once it's figured out, I can make it much lighter. Some of the problems I'm having stem from not having proper 3mm flat head screws to mount the trigger block. More work to be done.

Stock trigger...I decided to just tune, no polishing on this first run. By clipping the spring and adjusting the screws I ended up with a very reasonable 1 stage with maybe 2 Oz and a second stage wall which was easy to feel and a 6 oz trigger. The trigger does not return after first stage take up, but you still enjoy the safety of greater sear engagement. Definitely match grade here. With some more work, polishing and moly lube, it might even return on first stage, but I'm really happy with the super clean release.

After the first day of tinkering, I'm thinking I can make the stock trigger better with less work. I'm really not hung up on the first stage return as I almost never decide to not shoot after commiting. I'm also going to watch some videos and read the Boss manual for some pointers.
 
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The 400 trigger sound a lot like the one in my crown. Quite possibly the same. 1st stage doesnt return. But it's never bothered me. Kind of even like it like that. Never had a misfire in thousands of rounds.

It's definitely interesting to think about tuning or improving. But to be honest, I've never adjusted mine or done a single thing to or with it. Besides clean. If I had to guess (trigger scale is somewhere in the attic) maybe 14oz break. Pretty crisp. Could be better, but not by much. Primarilly for hunting, so the trigger has never begged attention, or really lest me wanting any more.

Either way, enjoy reading your posts about the boss trigger. (y) I'm not much of a target shooter (just doesnt interst me a ton). But I do respect and appreciate the work that goes into dialing in all aspects of the guns. Never know what you'll learn or when it may come in handy.
 
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qball said:
I tune the first stage completely out, I like single stage so it’s personal preference.
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I've done that before also, and it's fine for bench or target shooting. The only issue, when you remove all the first stage, the trigger roll is rotated to its final, fine resting point on the sear, so there is virtually no margin for safety. That's not an issue on the bench, but I wasn't comfortable moving around with it in that adjustment configuration.
I use both the standard and the Boss match triggers in my Royale 400. The fake first stage is kind of useless, but I am able to get a lighter, reliable release with it as compared to the standard trigger. I think it could be made to function better with a heavier spring, but the release is fine, so I have left it alone. For field use, I would use the standard trigger with a slightly heavier release adjustment.
The basic FX trigger design is an odd one, and it defies a true, match grade set up, at least in my experience. But these are basically field rifles, and for hunting and general plinking/casual target shooting, I don't think the Boss trigger is worth the effort. The addition of a lever allows a geometry that can yield a lighter release weight. But it's a finicky thing, and I don't have enough experience with it yet to have an opinion on its reliability.
 
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elh0102 said:
I've done that before also, and it's fine for bench or target shooting. The only issue, when you remove all the first stage, the trigger roll is rotated to its final, fine resting point on the sear, so there is virtually no margin for safety. That's not an issue on the bench, but I wasn't comfortable moving around with it in that adjustment configuration.
I use both the standard and the Boss match triggers in my Royale 400. The fake first stage is kind of useless, but I am able to get a lighter, reliable release with it as compared to the standard trigger. I think it could be made to function better with a heavier spring, but the release is fine, so I have left it alone. For field use, I would use the standard trigger with a slightly heavier release adjustment.
The basic FX trigger design is an odd one, and it defies a true, match grade set up, at least in my experience. But these are basically field rifles, and for hunting and general plinking/casual target shooting, I don't think the Boss trigger is worth the effort. The addition of a lever allows a geometry that can yield a lighter release weight. But it's a finicky thing, and I don't have enough experience with it yet to have an opinion on its reliability.
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I agree with a lot of what you said. However I do NOT use safety, only safe gun is an unloaded gun. I’m not going into a hot war zone so no need for a round in the chamber ever. My FX safety does work still with the first stage tuned out but still I only put the round in the chamber when I am ready to shoot. I had misfire due to trying to take up the first stage, I haven’t had a misfire since I got rid of first stage. My first stage is my finger tip touching the trigger.

Yes, I do use the safety in my semi auto AEA but not a whole lot of choices there in most situations but that’s a 5lb AR like trigger.
 
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qball said:
I agree with a lot of what you said. However I do NOT use safety, only safe gun is an unloaded gun. I’m not going into a hot war zone so no need for a round in the chamber ever. My FX safety does work still with the first stage tuned out but still I only put the round in the chamber when I am ready to shoot. I had misfire due to trying to take up the first stage, I haven’t had a misfire since I got rid of first stage. My first stage is my finger tip touching the trigger.

Yes, I do use the safety in my semi auto AEA but not a whole lot of choices there in most situations but that’s a 5lb AR like trigger.
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Then we are in agreement. I never use safeties. That's one reason I like mag systems as those used by Taipan and Weihrauch, they are easy to decock while leaving the mag in place, and can be recocked without double loading. With spring loaded magazines like the FX, I would remove it while moving in the woods.
 
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alpineboard said:
Did my Crown , by eliminate/not use the ball spring screw, and clip 1 full turn off the stock spring. Adjusted trigger screw until it does not cock, then slowly turn until it does, with a cheap trigger scale, is at approx 5 ounces, still is heavy for my app, Going to try for 3 ounces with the Boss.
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My Boss trigger is a bit over 5 ounces, with maybe 1.5 in the first stage. I didn't want it lighter, so I don't know about 3 oz.
 
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I got my Crown trigger very low to under 2 oz, however as I am recently finding out, The only reason I was able to get it that low, was due to my pressure bar has been at between 110 for 700mm barrel= 840 fps, and 130 for 380mm barrel=760 fps. So I had low mechanical pressure on the hammer spring, and thus able to get a low trigger weight.
All this has changed as I have discovered, I hope, the reason for my infrequent flyer shots, is due to low velocity. I increased the pressure to 150 bar, and max hammer spring setting inside set screw. This newer spring setting, the light trigger can not hold it. So the lowest I can go with stock crown trigger is approx 5 to 6 ounces.
So I am installing the Boss trigger kit, I got it in last night, but still need to figure out the grub screws and springs, settings, etc
One item on the boss kit, the small angle lever , the pin would not go thru the hole, pin size is 5/64", 0.078", the anodizing inside the hole most likely prevented the go thru, So I spent some time, by hand with a 5/64" drill, and got the pin to carefully slip in.
 
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First, I almost never use a safety on an airgun, unless I'm hunting.
Second, I've still not figured out the Boss trigger. It's one complicated dude and I've had more guns apart than most will ever see. No kidding, it's that difficult, but I'll not give up. For those who say it has a "fake" first stage, I've talked to those in the know and they tell me that properly set it DOES have a true first stage with more sear engagement. I've had my trigger aaallllmmmmost there, and then lost it all. I'll tackle it this winter again.
As to the standard Royale trigger, if you're willing to live with the first stage not returning, it can be surprisingly light, in the 5 oz range with no trouble at all. It's a good trigger. Some say it's a funky design, but a lot of triggers fall into that category, I invite you to look at the Win M70 trigger, and CZ 452 etc.
The Royale is one fine rifle, both of mine are so accurate and never shift that I feel confident in picking them up anything and taking a shot at whatever needs shot. If I were to get into air rifle benchrest, one of my Royales would get a modified stock with a flat forend and away I'd go. For bench shooting where you'll never cock the gun unless you're shooting, then I'd go even lighter on the trigger and that would be one gooooood shooter.
 
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