BRNO Sidelock double

As far as Brno, I think they only made the sidelock SxS. I can't compare them to the Merkel or Simson as I haven't owned either.

I checked on the SKU number you mention. It is a Brno sidelock listed as having ejectors. I would be concerned how bad the cracks are on said gun as it says it has a couple of hairline cracks. The sidelock guns have the metal sideplate that extends into the wrist of the stock. The boxlock ends at the wrist of the stock. That being said, you can get some boxlocks that have fake side plates to make them look like a sidelock. The Turkish CZ's are an example of fake sidelocks. Unless you get their hammer classic--it is a true sidelock.

Here is an actual picture of a Brno sidelock action.

sidelock-brno.jpg
 
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I think it is a matter of choice. The boxlock may be a bit of a stronger design because not as much wood needs to be removed from the wrist area of the stock. On the other hand, because of the design, a sidelock gun is often slimmer in the wrist and action creating better handling characteristics.. It is also generally easier to change a mainspring on a sidelock should one break in the field. Most high end guns are sidelocks.

The Sidelock is the stronger and less prone to breaking stocks because most of the working gear are on the locks at the sides where as with boxlocks more wood in the stocks must be removed to accommodate the working parts of the gun.
Cheers
 
The Sidelock is the stronger and less prone to breaking stocks because most of the working gear are on the locks at the sides where as with boxlocks more wood in the stocks must be removed to accommodate the working parts of the gun.
Cheers

Hmmm, that's opposite everything I have read. Here are just a couple of examples .

Boxlock - A type of action (receiver) for a break-open gun where the lockwork is contained within a box-shaped housing. A boxlock is superior to a sidelock because, although more metal needs to be removed from the action body, less wood needs to be removed from the wrist area and wood is generally more vulnerable than metal.



While I do prefer sidelocks, and admire the fine lines they produce, I am the first to admit that the wrist area of the stock is a little weaker because of the inletting for the sidelocks. What this means is that you just have to be a little more careful of your footing when hunting in rough country so you don't take a spill.

It's NOT that big a deal.

BUT when you buy a used one, really check out the wrist area of the stock for cracks, repairs, etc.
 
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