Sightron S-TAC 4-20x50 4A... HMM...

[some bloke]

Any of you guys who have used one found they go milky at about 14~16 mag? Its still usable but very eye position sensitive at the higher mags. I've had another experienced shooter confirm the results in case it was my eyesight.

I also had to shim up in the rear mount to get it to shoot about the right elevation at about centre turret setting as it started out shooting about a foot low at 50 yards while first checking it hits an A4 target. Swapping the mounts made no difference to the elevation.

[poppy mae]

Dave, after buying its big brother, went out on a limb and bought the ex-demo from optics warehouse in the moa ret, its the 4-20 x 50 , its gone on the hmr for now (took the Mamba off ) used the mamba mounts, picture wise its very clear and crisp through the mag range, once zeroed at 100yds consistant touching shots on the bull, nice!Tried it with my homemade screen type nv , works well. Also tried it with an NT300 fine upto about 10x then tunnels out , doesnt do this on the mamba, works ok on the homemade wardy type nv. Overall happy with it, tried it next to its big brother and would say that has the edge nv and day usage, but its still a fine scope to look through and the moa is better than i thought it would be. Off topic have got your new mould made yet , could do with another box or two, put the same set up on all rifles......hope you get it sorted.

[poppy mae]

Dave just double checked no milkiness at any of the focus range from 4 right through to 20 still crisp , sight picture very good, with head on the comb of the stock.

[some bloke]

Thanks Pops, Maybe mine is a bad un for white out then. Great below 12 mag.

I'm impressed with the turret clicks and how it holds zero through the zoom range - but put the latter down to me shimming it to keep the turrets about centre. With it shooting so low at centre turrets first set up I wonder if the whiteout is something to do with erector tube misalignment.

Anyone else's observations would be appreciated before I discuss it with Optics Warehouse.

Machinist is still taking the pee despite being told four times now how urgent it is and that I'm turning away orders. Each time is current reply is 'on the machine next Tuesday and ready for Wednesday but I have staff holidays going on at the moment'

Same story with the new jubilee clip DSA's.

[phoenix]

I just bought an S Tac 3-16x42 MOA off another forum member. I've also got an S Tac 2.5-17.5 x56 with the 4A ret
I bought the 3-16x42 because of the ret and have mounted it on my Weihrauch 22 hornet.
I wanted a smaller, lighter scope for the hornet, and as great as it is, the 56 is a big old lump of aluminium and glass
To my eyes I see no significant difference between the 2 scopes in normal daylight, but with a Wardy type NV addon the 56 definitely has the edge at higher magnifications.
I notice a light "halo" around the outer edge of the FOV of the 42 above about x 10-12 - that simply doesn't happen with the 56.
However, I almost certainly won't be using the scope in NV configuration at more than about x10. so I don't think it will be a problem

Cheers

Bruce

[some bloke]

As usual your words smithing is much better than mine Bruce - I think that Halo is what I'm calling whiteout, seems to come from above if you get my meaning.

I also usually use NV at about 8 to 10 mag and the flip up 'locator' pointing upwards at 9 mag is where I'll mostly be at which makes me feel like I'm being pedantic. A mate who uses scopes about the 2K price thinks it well worth the 'piddling £425' (his words) - especially as I will mostly be using it for NV at 9 mag. I'm wondering if the white/halo is the internal reflections that Clive spoke of checking for some time ago?

I'm tempted to try a 25mm lens in the E700 to see if it allows me to use lower mag to avoid the tunnel effect pops spoke of. I also felt the T67 beam was too tight for it at 9 mag - which a 25mm lens might resolve by cropping the perimeter?

Now then - pedantic alert... Did you notice the crosshair gets thicker and less defined at the edges?

[poppy mae]

Nope!looked normal to me

[poppy mae]

P.S did you get your mould sorted ?

[some bloke]

P.S did you get your mould sorted ?

Sorry pops, I'd edited this into a reply above - probably after you had read it;

Machinist is still taking the pee despite being told four times now how urgent it is and that I'm turning away orders. Each time his current reply is 'on the machine next Tuesday and ready for Wednesday but I have staff holidays going on at the moment'

Same story with the new jubilee clip DSA's. Its still not the tuesday he meant maybe.

I'm tempted to get the old pattern back off him and accept the inside of the box is getting scruffy because of flaking resin chips etc.

[phoenix]

As usual your words smithing is much better than mine Bruce - I think that Halo is what I'm calling whiteout, seems to come from above if you get my meaning.

I also usually use NV at about 8 to 10 mag and the flip up 'locator' pointing upwards at 9 mag is where I'll mostly be at which makes me feel like I'm being pedantic. A mate who uses scopes about the 2K price thinks it well worth the 'piddling £425' (his words) - especially as I will mostly be using it for NV at 9 mag. I'm wondering if the white/halo is the internal reflections that Clive spoke of checking for some time ago?

I'm tempted to try a 25mm lens in the E700 to see if it allows me to use lower mag to avoid the tunnel effect pops spoke of. I also felt the T67 beam was too tight for it at 9 mag - which a 25mm lens might resolve by cropping the perimeter?

Now then - pedantic alert... Did you notice the crosshair gets thicker and less defined at the edges?

Dave,
I'm almost certain the white "halo" is due to internal reflections.
Can't say I noticed the reticle lines getting thicker and less well defined near the edges both with and without the add-on fitted.
I did notice that, with the add-on fitted, the reticle will go in and out focus as the magnification is changed unless you get the dioptre setting just right.
However, that's likely to be an issue with my add on since it did the same with the 56.

Cheers

Bruce