375Short wrote: Fri Mar 28, 2025 6:58 am
A different interpretation. A Bead (a common shape of front sight), a Post ( common shape of front sight) , an Aperture (a little murky). One may argue the common Lyman 17a or similar sight is an Aperture type sight also often called a Globe or Target sight. Inside that Aperture one can place inserts. The rule makes no mention of inserts, how many or what shape. The rule then addresses Anti-Glare tubes as a separate issue or piece, as it could be applied to a hood over a post or bead front sight or part of the Aperture type sight. Then it mentions length and diameter, diameter is mentioned as if it’s a length measurement? In the end you have a rule that can be interpreted several ways and like most of the book could stand some serious editing. The difficulty in editing is the editor must know the “intent” of the rule.
I’m in no way certain this version of interpretation is the “intent” of the rule. I would argue that what insert shape or how many inserts a competitor places inside the 17a aperture sight is a matter of personal taste. No Lyman or Shaver insert shape (or combination) is the magic road to shooting 40.
The common interpretation of front sight standards is contained in the conversations prior to this post. That is the prudent approach.
Perhaps we are our own worst enemies?
Rule 3.1.3(a) is "muddy" and needs to be re-written to remove ambiguity.
Common usage (interpretation) of terms can lead one astray when we speak specifically about sights, globes, and apertures, for example.
My interpretation is as follows - yours may be different, and if so, our fraternity needs to resolve which will be applied.
The 'globe' is that piece of equipment that is mounted toward the muzzle end of the barrel. It is that part of the sight which retains the inserts which can be any number of shapes, but for the purpose of l/a silhouette, are limited to being a post or bead or fixed non magnified round aperture. The 2017 rule change (addition, to include "fixed non magnified round aperture") allowed for the use of the Lyman type apertures but excluded the variable Anschutz/Gehmann type. You are free to choose whatever aperture size that you desire, but it must be fixed in size.
"Inside that Aperture (Globe) one can place inserts. The rule makes no mention of inserts, how many or what shape."
The rule most certainly does stipulate that the front sight "must be a post or bead or a fixed non magnified round aperture".
If one peruses page 48 of the Lyman catalog, here
https://www.lymanproducts.com/media/ama ... uRLQcu.pdf , it will be seen that even Lyman use two terms for the same system, one being '20MJT Globe Front Sight', and 'Series 17A Target Front Sights'.
From that same page there is a '93 Match & Series 20 MJT Insert Set', and 'Series 17A Insert Set'. The first refers to "two post inserts and five aperture inserts". The latter refers to "two post type inserts, one bead insert, and five aperture-type inserts".
Clearly, the inserts that have holes in them are apertures, the others not.
By way of illustration, and to throw even more "mud", go here
https://williamsgunsight.com/wp-content ... atalog.pdf and look at pages 20 and 26, there are images of sight "hoods". Those are neither globes nor apertures; they are to provide "shade" over the front sight.
Even more of a "dogs breakfast" is that part of the rule defining the dimensions of the globe ( or should that be "anti-glare tube" ?? ) Length of the globe, or the anti-glare tube? Diameter: of which?
Don't get me started on the "support blade" length!
Maybe the whole thing needs a re-write?
49er