Are there Metric MoA sights?

[Tower75]

Hi, all.

How is everyone?

I know that Minute of Angle and Mil Dots have been talked about a lot on here, but I have a question:

Now, I appreciate that generally speaking MoA is an Imperial thang, (much like 240 pence to a pound -- 'cos that seemed logical ) and Mil Dots are not Imperial but metric instead. So, what happens in the shooting world when there isn't a scope?

Lets say it's 1960 (no reason for the year, just a ye old time), If I take an iron-sighted rifle fitted with target sights from the UK then it will measure in Minute of Angle; inches and yards, etc. But what if I take a target rifle from, say, France or Germany? There isn't a scope so there's no Mil Dots to worry about, but these countries are Metric, so what do their sights measure in?

Do they measure in MoA too but they simply say 2.5cm per 100 metres, which isn't an accurate transition from Imperial to Metric.

Or do all iron sighted target sights measure in Imperial MoA for uniformity's sake?

[dromia]

The windage and elevation knobs on those bloody foreign metric aperture sights turn the wrong way too.

Stick to Imperial it is a lot simpler.

[TattooedGun]

An AK-47 seems to have an iron sight that lets you adjust to the distance in metres (elevation).

[Gaz]

Years ago I shot with a girl who had a French target rifle. The threads were all the wrong way round and the damn thing was graduated in 1/3 MOA clicks.

I learned the latter after a very odd coached shoot where my wind corrections were all about a third of a minute too far for her...

[TattooedGun]

Years ago I shot with a girl who had a French target rifle. The threads were all the wrong way round and the damn thing was graduated in 1/3 MOA clicks.

I learned the latter after a very odd coached shoot where my wind corrections were all about a third of a minute too far for her...

.1 Mrad = 0.34 minutes

Theres the 1/3 MOA clicks.

It was in .1 Mrad clicks instead of 1/4 MOA clicks...

[WelshShooter]

I'm not sure if aperture sights are any different, but for sake of an example lets look at the iron sights of classic German Kar98, the British Lee Enfield, the American Springfield and the French MAS.

+ Kar98
Sights adjustment from 100m to 2000m in 100m increments.

+ British Lee Enfield
Sights measured in yards.

+American Springfield
Graduated sights up to 2,500m.

+French MAS
Sights adjustment from 200m to 1,200m in 100m increments.

So if the target sight is standard on the rifle then chances are it's calibrated for distance with a specified cartridge in mind. If it's an aftermarket sight then I have no idea what it would have.

[Tower75]

Years ago I shot with a girl who had a French target rifle. The threads were all the wrong way round and the damn thing was graduated in 1/3 MOA clicks.

I learned the latter after a very odd coached shoot where my wind corrections were all about a third of a minute too far for her...

.1 Mrad = 0.34 minutes

Theres the 1/3 MOA clicks.

It was in .1 Mrad clicks instead of 1/4 MOA clicks...

Ooh, er. So, metric target sights are set to 8.46mm clicks?

A MoA rifle is considered able to shoot all of its rounds within 1 inch at 100 yards, so how are metric rifles measured against? Is it 2.5cm at 100 metres?

[TattooedGun]

Years ago I shot with a girl who had a French target rifle. The threads were all the wrong way round and the damn thing was graduated in 1/3 MOA clicks.

I learned the latter after a very odd coached shoot where my wind corrections were all about a third of a minute too far for her...

.1 Mrad = 0.34 minutes

Theres the 1/3 MOA clicks.

It was in .1 Mrad clicks instead of 1/4 MOA clicks...

Ooh, er. So, metric target sights are set to 8.46mm clicks?

A MoA rifle is considered able to shoot all of its rounds within 1 inch at 100 yards, so how are metric rifles measured against? Is it 2.5cm at 100 metres?

There is no such thing as a metric rifle and an imperial rifle (well, there might be imperial rifles....)



However the sights are what are measured in metric or imperial.

It's a phrase I guess, that a 1 MOA rifle is such because that's how we measure it.

I've never heard anyone say anything with regards to metric in this fashion. But I'm not on the range enough to have heard it anyway!!

In this country, I'd imagine that we'd measure the group size and still say it was an MOA group, as it's the standard measurement for group sizes, here.

On the continent, they might suggest they have a XX mm group size, as opposed to .XX MOA.

Dunno. Intrigued to see if anyone has the answer...

[dromia]

Minute of angle is just that a minute of angle one 60th of a degree, thankfully the bloody merticians haven't got to metricising that to 100 degrees in a circle unless, how you choose to measure the that angles difference at whatever distance is up to you, at 100 yrds a minute of angle measures 1.047" or if you are metric 26.59mm.

Then of course there are Milradians which works on 1/10th increments so decimalised but is a pretty coarse as they just under 4" at 100 yard.

The fact that 1 MOA at 100 yrds is as near as dammit 1" should tell you that the Imreial system of measurement is the chosen one.

[breacher]

And early Russian rifles had sights graduated in "arshins" rather than yards or metres - just to add one more unit of measurement to the mix........