I have a new rifle in a MBA Chasis with the bubble level in the rear below bolt. It has a bean and a bubble that moves back and forth. Which one am I suppose to center?
Here’s is a stupid question! Bean or Bubble?
- Thread starter Baer45
- Start date
Ehhhh.... I have two MAP BA chassis and the bubble/bean/whatever is about useless imho. Neither of mine were level when I checked them with a much larger level across the rail on barreled actions installed in the chassis (kinda sorta fixed by popping the little thing out and shimming it with tiny plastic tape). You can't see it with the cheek welded in firing position (at least I can't). And finally, it's so short that I wouldn't trust it anyway - like trying to draw a 3-foot straight line with a 2-inch ruler.
It's a nice gimmick, though.
It's a nice gimmick, though.
i don't understand why they used a bean? if the bean is on one side, and the scope is level, there is nothing that will make the bean go into the center. maybe i am just confused?
I guess that bubble magically mates up with every reticle tube in existence, since they are all perfectly plumb right out of the box.
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a normal spirit level tube has a slight bow which is why the bubble returns to the center if it is level.
i suppose they could have a very slight bow for the bean, but i still don't know why they use a bean unless they think it is easier to see or something.
lots of people do take great care when installing the scope to ensure the reticle is plumb or level when the rail or rifle is level.
this way is doesn't matter where the level is mounted, and you don't have to cant the rifle to plumb the scope or reticle.
