My Lott's shooting super low. It's got a #11 front in it. Is this the lowest or can I get lower. If so what # an I looking for. Higher numericaly or lower?

Maybe just semantics, but if it is shooting low, then your front sight is too tall.
I do not know the front sight number correspondence to height, but if they go from 1 to 11, you definitely have room to improve in going to a lower front sight, assuming 1 is the lowest.
I'll try to look it up, something I need to know anyway.

Give us:
1. The sight radius of your gun (distance in inches between front and rear sights)
2. The height of the front sight (maybe I'll find #11 listed somewhere)
3. The distance to your target (yards)
4. And the amount in inches that it is shooting low ...

... and we can figure out how much lower your front sight should be, to bring the point of impact up.
Simply a matter of similar triangles and proportionality,
or found in a table in the Brownells catalog.

Hello RIP, yes I know it needs to be shorter. Thats what I'm wondering , is # 11 the lowest and which way the #s go. Its a CZ Safari Lott. 25" barrel and its 6" low at 25 yds with the 100 yd blade. The insert is .26" from base to the top of the bead. Thanks for the responce.

I did a quick search and the first "authoritative info":
Trust but verify.

Sumbuddy says they range from #0 (shortest) to #14 (tallest) with a 1 millimeter step for each, not verified yet.

Your 25"-barreled CZ has a sight radius of 19".

Simplifying, and ignoring for now the small difference in trajectory between 25 yards and 100 yards
(if you are zeroed at 25 yards, it is going to arc up and then back down to be very close to zero again at 100 yards):

A six inch error at 25 yards equals a 24" error at 100 yards.

The difference in sight height required for that change is: -0.1268" on the front sight

-0.1268" x 25.4mm/inch = -3.22 mm

You might get a sight that is 3mm or 4mm lower.
That is #8 or #7.

Don't trust those numbers on mm steps, yet ... unless sumbuddy who know chips in here.

.2600" - .1268" = .1332"

You need a front sight height about half of what you have, just going by the numbers, I'm just saying.
If they are proportional in height to the numbers from #0 to #14, and yours is #11, you might need a #5 or #6.

Searching for some confirmation ...

MTM,
Are you measuring the sight height from the bottom of the dovetail, with the sight removed, or just the height exposed above the front ramp?

The millimeter steps might make sense if you measure the entire front sight insert height with it removed from the ramp.

An anonymous birdy PM-ed me to check with Wayne at AHR.
He has bucketfuls of the beads on posts.

CZ-USA will send you plenty.

The spiffy NECG replacements are available, at Brownells too.
Those will be too tall for you ... unless you are not measuring from the bottom of the dovetail, and the true measure of you sight height is more than .26" you stated.
Did you not measure bottom of dovetail to top of sight?

Nail this down:

The #0 to #14 with 1mm steps might work when you start measuring
properly from bottom of dovetail to top of bead.

The NECG replacement sights are arrayed in 0.5mm and 1mm steps, in various White Bead, Gold Patridge, Red Fiber Optic:

6mm .237"
6.5mm .256"
7.5mm .296"
8.5mm .335"
9.5mm ..374"

This is measured from the bottom of the dovetail to the top of the bead.

If you measured wrong, 'fess up!
The sight height change that I calculated is still correct, you just need to be measuring properly.

There may be a better sight at Brownells, from NECG, if you were measuring wrongly with that .26" reading:

Brownells Catalog #61 on page 218:

Morning RIP, realy appreciate your help. The insert is .26" from base the top of bead with the insert out. Thats what worries me as it is very short already. However if #1 is the lowest I should still be O.K. though I find it hard to believe there'd be 10 step shorter than .26.

Perhaps it's time for a taller rear sight?

MTM ;
. I just measured a front sight from an older Lux model CZ 550 Saf.Mag.
. On the very bottom of the sight it has the number 2 stamped in and it measures .186" from very bottom to very top of the sight body ,not bead ,as the bead is gone I should have kept that hood on ..

MTM,
Good, you measured properly.
Welcome, and thanks to you for getting me started on this documentation.

Thanks to gumboot458 for that #2 measurement.

I measured some beads too.
I will add that #2 to my list:

#2: .186" = 4.72mm
#8: .235" = 5.97mm
#9: .242" = 6.15mm
#11: .259" = 6.58mm
#12: .264" = 6.71mm
#13: .274" = 6.96mm
#14: 0.280 = 7.11mm: The mark on this one looked like an inverted "V," maybe illegible "14" ... ?

There sure isn't 1 millimeter step between numbers. That was bad poop from a cursory search of this forum! You sure can't believe everything you read on the internet!!!

There is an average of .00783" for each unit step from #2 to #14, using the above measurements.
That is 0.2 mm per step.
A fifth of a millimeter!

You will need a nonexistent front sight from CZ. A negative number.
All the NECG's are too high.
A #0 from CZ, if there is such a thing, might be close enough.

First consider the bedding, and tension on the forearm screw.
Loosen the forearm screw (if it is overly tight) and see it it shoots higher, with the current sight.
If so:
Glass bed it with pillars and no tension downward on that recoil lug on the barrel.
I would bed it neutral with glass out to the barrel lug, full contact, and free float the barrel forward of the recoil lug on the barrel.

2 feet of error at 100 yards may not be hopeless.
May not be a bent barrel.
However, if you don't want to mess with it, send it back to CZ for the fix. New rifle, new barrel, or just a new rear sight insert, about 0.13" taller?

Yes, a higher rear sight is another way to raise the POI, insert for island or use a peep and get rid of the rear insert.
Get a new set of NECG sights front and rear?

But is the rifle accurate/sound enough to be worth the effort?
Have you tried a scope to see what it can do for accuracy?
Can it be zeroed for elevation, at 100 yards, with a scope?
Bad news if you ran out of elevation adjustment there.

Ya know , Another thing it could be , I don,t know but this is a possibility .....
.
. The older Lux model CZ 550 , and The one BRNO 602 that I looked at real closely , , Had much shorter rear express sight insert than the new American style .. I wonder if it,s possible you somehow got the wrong size rear express sight insert ... .....................The entire sight is smaller than the new ones... I,m sure Bitteroot .. Knows volumes more than I and if he or someone else could chime in here ......
... I know there are at least 2 different height CZ rear sights .. There may be more , I don,t know ....

Really appreciate the help here guys. I've only taken it out once. I've got some clunky factory rings around here somewhere. I'm going to put some Tallys on it, I'm checking a couple of local sources now. I guess I should bed it, scope it and see were I'm at.

I never studied those rear sight inserts like gumboot458.
If there is a taller rear sight insert, then an extra 1/8" (0.125") would get you to the .1332" ballpark to allow fine tuning with the different front sight heights.
Or if the rear sight insert is even greater in height, then an NECG front insert could be used.
Blah, blah, blah.

PS: Obama throws a baseball like a sissy little girl.
Like a left handed sissy little girl wearing a bullet proof vest under her White Sox warmup jacket.

This may sound silly but a very high or low POI,may simply be caused by a sight screw that is not tightened down enough.They really need to be tightened down.

quote:

Originally posted by shootaway:
This may sound silly but a very high or low POI,may simply be caused by a sight screw that is not tightened down enough.They really need to be tightened down.

a shootaway quote i REALLY don't want deleted/edited/change.

the numbers are MM's in height
you need a lower one -- these are cheap .. get a couple


there are two standard rear sights heights.

I've been working on the irons on my 450 Dakota to get them sighted to a load. I thank you gentlemen for all this good information!
I knew where it was but you gave it to me in one lump.

quote:

Originally posted by jeffeosso:
the numbers are MM's in height

A misinterpretation?

The numbers are more like one-fifth millimeter steps, which makes more sense in fine tuning the sight elevation.

Obviously a #0 or a #1 cannot be 0mm or 1mm tall, from bottom of dovetail to top of bead.
Likewise a # 14 is not 14mm tall (.551").

Care to rephrase, jeffeosso?

from a base height, ron..
10 is 1mm lower than 11 ..

doubt it? then call cz YOURSELF

"obviously"
one should be slightly more careful in word choice, as your reply states.

Have a look at NECG's offering, at 1/2 MM steps..
http://www.brownells.com/.aspx...RPIECE__FRONT_SIGHTS

I had a CZ 550 in .416 Rigby that had the same problem. Even with a scope mounted on it, it shot 24" low at 100 yrds. There wasn't enough adjustment in the scope to get on target. I sent it back to CZ and they fixed it right away. They turned it into a great shooter.

I would send it to CZ for repair. I think it was a bent barrel and they straightened it.

Tom

Tapper2, I put a 1.5x5 on it and had no issues zeroing it. I'll probably cut 3" off the barrel at some point so I'll deal with the irons at that time. For now its a ton of fun. Kills water filled jugs way better than a hot loaded Guide Gun.

My CZ 458 Lott came [with iron sights] sighted in at 100yds. I mean I had little to do to get my zero.

I now have a Burris 1.5 X 5 Safari scope on it now.

quote:

Originally posted by MTM:
Tapper2, I put a 1.5x5 on it and had no issues zeroing it. I'll probably cut 3" off the barrel at some point so I'll deal with the irons at that time. For now its a ton of fun. Kills water filled jugs way better than a hot loaded Guide Gun.

MTM,
Sounds like your rifle is a good one.

I have looked at some CZ rear sights and have identified at least three different rear sight insert heights that CZ has used over the years on the CZ 550 Magnum.

From bottom of dovetail to top of flat on 100-yard fixed leaf:

.468"
.512"
.606"

The difference in those is enough to fix your sight problem,
if you have the lowest rear sight of those three, then you need the tallest rear sight of those three.

There may be more.
Not just two rear sight heights have been made in the past.
More.

More.

Thanks RIP