Hi All,

First post and it has to be a question. I have just acquired a S&B 4-16X50 
PMII with the P1 Bryant reticule (thanks wife!) - this is a metric scope so 
one click = one cm.

My question is how does this work - how can I relate this to a target, I 
vaguely understand MOA but not cms, is it at a set distance or based on the 
reticule size at a set magnification or something else?

Thanks in advance

--

/d

Ovenpaa  wrote:

> First post and it has to be a question. I have just acquired a S&B 4-16X50
> PMII with the P1 Bryant reticule (thanks wife!) - this is a metric scope so
> one click = one cm.
> 
> My question is how does this work - how can I relate this to a target, I
> vaguely understand MOA but not cms, is it at a set distance or based on the
> reticule size at a set magnification or something else?

Presumably, 1 click equals 1cm at 100 metres?
Typical imperial scopes are 1/4 inch or 1/8 inch at 100 yard.
I'm not sure about this scope, but some are only true at certain zoom
ranges - say, 10x zoom is the only point when 1 click = 1cm. You need to
read the docs to find out if it is true of the full zoom range or at one
mag. 

So, if you zero the scope at 100 metres, then turn the top (elevation)
turret clockwise(all scopes I have had work this way round, though
others may move the point higher) by 1 click, the bullet will now impact
the target 1 cm lower.
1 cm seems rather a large movement, better scopes tend to have finer
adjustments, 1/8inch equals around 3mm, so are you sure it is 1cm?

The side movement will also move by the same amount with 1 click.
If you know the distance correctly that you are aiming at, then it is
easy to set up the scope initially, e.g., if you are (if in fact it is
1cm at 100 metres) 4 cms high, and 6 cms right, then you do 4 click down
and 6 clciks across, and the next bullet should be dead on target.

Then, once you have the zero set correctly, you need to find out where
the rifle is shooting at different distances.
So, say you want to shoot at 200 metres, (and asssuming there is
negligible drop of the bullet during its flight), 1 click will move the
reticule by 2 cms. At 50m it will be .5cm and so on.
In the real world, a bullet will have dropped a little in its flight at
200 m, and will be a little higher at 50m than at 100m, so you need to
test all all ranges you are likely to be firing at.
Alan.
-- 
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In message <7k_yi.34110$S91.31797@newsfe7-win.ntli.net>, Ovenpaa 
 writes
>Hi All,
>
>First post and it has to be a question. I have just acquired a S&B 4-16X50
>PMII with the P1 Bryant reticule (thanks wife!) - this is a metric scope so
>one click = one cm.

It's 1cm per click at 100m.

>My question is how does this work - how can I relate this to a target, I
>vaguely understand MOA but not cms,

One Minute of Angle is 1/60 of 1 degree - at any distance.  In the 
imperial system, this equates to just over 1 inch at 100 yards.  An inch 
is 2.54cm but a MOA at 100 metres will be slightly more.  You 
documentation should explain this.

>is it at a set distance or based on the
>reticule size at a set magnification or something else?

That depends: does your reticle increase in size with magnification or 
does it remain the same size?  If the former, then the scaling remains 
the same, if not, then it will only function at one magnification - 
often the top magnification.

-- 
Jonathan

The army doctor said "Go behind the curtain and remove your clothes",
I said "Aren't you supposed to buy me dinner first?"
Spike Milligan

Many thanks for your replies, I would have relied sooner but OE chose 
not to show me your postings and it was only the move to Gravity that 
showed these up....

I have a better understanding of the 'scope now, but I must say I am 
somewhat disappointed in the documentation considering the reputation 
S&B have for quality optics - I blame my wife for choosing an obscure 
reticule with metric adjustments. I am off to Short Siberia Wednesday to 
zero in and break in the new rifle so it will be an interesting day.

I will post my finding back.