Bruno Double Triggers

I think Bill Leeper has done it before. Is it a 21H? Why would you want to replace the set trigger?
 
It can be done, but is not simple or cheap. I had a new single trigger installed in my Brno 22F by Ralf Martini. If you want to preserve the double set triggers, you can remove them but a single trigger then requires new bottom metal which may also require a new trigger guard and floor plate. Or you can throw away the double set and have the bottom metal machined to make room for the single trigger. In my case I opted to keep the original set and was supplied with an original bottom plate which was machined to fit.
And by the way, the rifles are made in the city of Brno, (pronounced burr-no) not "Bruno" a popular error in pronunciation and spelling. My home town is named Bruno, so I notice this error more than most!
 
I've changed several. Timney makes a drop in replacement, push out two pins, remove old trigger, replace with Timney, replace pins. And the original safety will still work. Set the trigger guard assembly in a milling machine vise, mill out the trigger slots with a 1/4 inch endmill. Counter mill a 3/8 slot over the 1/4 inch one leaving roughly .060 of meat on the bottom of the floorplate. This is because the Timney is deeper than the original trigger and will bottom out on the floorplate before the action screws are tight. So it looks like a 1/4 inch slot that widens to 3/8 at the top. Don't know if that is a very clear explanation or not, but it's not difficult.
 
1899 said:
I think Bill Leeper has done it before. Is it a 21H? Why would you want to replace the set trigger?
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I very much like the look of Brno's double set triggers, but I understand why someone might want to switch to a single trigger. Typically, the trigger is too heavy to shoot well when unset, but set, its too light to control in any field shooting scenario, even though the screw provides some degree of adjustment. But more importantly, the triggers are positioned backwards, the rear trigger is the sets the more difficult to reach front trigger. Thus your hand position is unnatural when you attempt to break the shot, Christian Bale's performance in Public Enemy not withstanding. This backwards trigger position is the primary reason why I'm unlikely to use one as a primary carry rifle.

Having said that, a conversion to a single trigger that does not relocate the trigger to the rear of the trigger guard is not enough of an improvement to justify the expense, and it screws up the appearance of the rifle. My suggestion then is, if the conversion to a rear positioned single trigger is not possible, to leave the double set triggers alone, rather than butcher it. Use the rifle as is, or sell it to someone who will appreciate it, and use the proceeds towards a single trigger classic rifle, there are many to choose from.
 
Thanks Boomer - I agree, leave the old timer alone and sell it to one who likes the double trigger set up.

I spend some days re-converting them back to double triggers! Kinda like a milsurp de-sporterization.

To be clear - its your rifle and you can ceratainly do what you wish... my 2 cents only.
 
Personally, I think double set triggers are good for hunting methods for which they were designed, Europe. From what I have read they do a fair bit of hunting from stands and hides and the shooting is unhurried and deliberate. The Brnos I have changed triggers on were already modified from factory original with recoil pads, receiver sights etc. If I owned an absolutely original rifle I would hesitate to change it.
 
The double set were meant to set when you were ready to shoot.
They aren't horrible to unset.
I wouldn't even consider walking around in the bush with the trigger set.
Makes no sense.
And as stated above, if the rifle is prestine, they are worth more unaltered.
 
Brno triggers

Thanks gentlemen for your input. Personally, I love the double triggers and have them on both my Brno's, the 7x57 plus the 8mm. The only reason I was considering changing to the single trigger on the 7x57 was that my son will be using this rifle from time to time and as you all know, if you are not very familiar with using the doubles, the shooter can get quite a surprise during the excitement of putting the crosshairs on a big buck. I had hoped it would be a simple matter to swap trigger sets, however you folks have educated me on that idea. I think I will keep the rifle with original triggers and buy my son a rifle for him and save a lot of future aggravation.
 
Boomer said:
I very much like the look of Brno's double set triggers, but I understand why someone might want to switch to a single trigger. Typically, the trigger is too heavy to shoot well when unset, but set, its too light to control in any field shooting scenario, even though the screw provides some degree of adjustment. But more importantly, the triggers are positioned backwards, the rear trigger is the sets the more difficult to reach front trigger. Thus your hand position is unnatural when you attempt to break the shot, Christian Bale's performance in Public Enemy not withstanding. This backwards trigger position is the primary reason why I'm unlikely to use one as a primary carry rifle.

Having said that, a conversion to a single trigger that does not relocate the trigger to the rear of the trigger guard is not enough of an improvement to justify the expense, and it screws up the appearance of the rifle. My suggestion then is, if the conversion to a rear positioned single trigger is not possible, to leave the double set triggers alone, rather than butcher it. Use the rifle as is, or sell it to someone who will appreciate it, and use the proceeds towards a single trigger classic rifle, there are many to choose from.
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I agree with the first comment about the trigger being far too heavy when not set (on the 21H and its variants), but disagree that the set trigger is too light. I think it comes down to what you use and get used to - I love the set trigger feature, especially for off-hand shooting. It allows you to safely have the trigger pull of a bench rest rifle in a hunting rifle. I also haven't had an issue with the positioning of the two triggers, but again, I am used to it. Some double set triggers have a specially curved rear trigger to creat a more "natural" hand position too - although it is not like that on the 21H. Having said that I prefer single set triggers where you move the trigger forward to set it.
 
agent007 said:
I think I will keep the rifle with original triggers and buy my son a rifle for him and save a lot of future aggravation.
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My dad bought me this Brno 21H 8x57 when I was 9 or 10.
I have never lost a round out of this rifle on the oops method.
Teach him how to safely shoot, use that beauty.
 
I disagree that Europe hunting is more "deliberate" that N.A. - they take quick off hand running shots from a blind or a driven hunt or a ground stand, probably more than we do as we view a running shot as somehow un-sporting or low percentage. We use stands and blinds as well but we tend to truck hunt (a lot more than in Europe).

I think we are more deliberate over-all, with our range finders and do-dads and precision sub-moa shooting desires.

One does not need a 2.5 pound single trigger to hunt effectively. A heavy trigger that breaks clean is good as well, as long as it is what you get used to.

I have seen many "pre-fire" with a light trigger when they are in a rushed situation. I like the double set, the fronts are set to not too heavy, but the set is there for those rested shots.

As always, I have never met a NA animal that required to be so rushed to be worth it to risk safety (Big Bears excluded)


I agree with kamlooky - shoot that beauty and your child will grow up knowing all about double triggers and the joy of a classic rifle in a classic caliber.
 
Brno DSTs are machined right into bottom metal, they are not a separate unit as on some Mausers. Original Commercial Oberndorf DSTs are much like the Brno. I have on several occasions where the DSTs (in cases where a previous owner removed the rear trigger - why it beats me, as any DSTs can be fired by pulling the front trigger without setting the rear ) are a unit replace the DSTs with a single trigger. I believe any standard length bottom metal would do as a replacement, macine off the trigger guard and fit the Brno trigger guard. that way you still have the intact original. These rifles are getting more pricey every day DSTs and all. PM me if you need more info. --- John303.
 
1899 said:
I agree with the first comment about the trigger being far too heavy when not set (on the 21H and its variants), but disagree that the set trigger is too light. I think it comes down to what you use and get used to - I love the set trigger feature, especially for off-hand shooting. It allows you to safely have the trigger pull of a bench rest rifle in a hunting rifle. I also haven't had an issue with the positioning of the two triggers, but again, I am used to it. Some double set triggers have a specially curved rear trigger to creat a more "natural" hand position too - although it is not like that on the 21H. Having said that I prefer single set triggers where you move the trigger forward to set it.
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I agree, it comes down to what you are used to and to the conditions under which you would use it. I can't imagine for example using a set trigger on our late season caribou hunt when the mercury hits the bottom of the glass, and you have to press you finger on the side of the trigger just to feel it. I dislike the Brno single set trigger even more than the double set triggers, which at least look nice. I want a trigger that is positioned at the rear of the trigger guard, and that always has the same let off weight whether my shot is taken at moderate range from a rested position or a snap shot up close. But for the folks who appreciate the set trigger feature, the Brnos equipped with double set triggers are practical, top quality, handsome, rifles, nearly as good as my ZG-47.:D
 
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