Question about S76 HE and AP

[stankyus]

I know there is a different ballistic between the 2 rounds.

However I got tracked from a tiger from a very long distance. He looked closer however I could hit him with AP ammo at 2400 yards using the AP reticle. He was close to the Schilde bridge so I looked at that first to get a quick idea of distance - the bridge was 2.2K he was mb 4-600m West of it. That put him at 16-1800m. My first return shot at 1600 was far short so I walked my rounds in and found them to hit him at 2400 using the AP side of the site. Of course it would not do anything, but mb a lucky track which I did achieve and mb a degunning. However I ran out of AP and shot HE at him, my HE flew OVER the bridge way behind him. My HE was able to hit him at 1500m-1600m.

1. The Tiger was less then the distance using a mark on the bridge and map for quick ranging. Bridge was 2.2k.. Tiger was closer, why did my AP ammo have to aim from the 2400m mark. My HE was hitting at the suggested range of of 1500-1600m. Meaning that both ranges produced a hit on the tiger.

2. How am I so confused now with how the gun site works? and why is there such a major distance issue between the AP and HE now? I know that HE will go further using the aim but prior I could hit with the AP fine and had to adjust with the HE. Its seems to be opposite now.

[marcus33]

Can't tell you about the s76 but witht the M10 and the range finder, AP range in yards usually is spot on while if you use HE at the same range it usually goes way over the target. The difference within the sights should be at about 300 yards.

So lets say the target is at 1600 yards, use 1600 yards for AP with the sights and 1300 yards for HE.

[Duine]

Different ammo types fly differently, ie. one is heavier and falls faster etc.

[stankyus]

Can't tell you about the s76 but witht the M10 and the range finder, AP range in yards usually is spot on while if you use HE at the same range it usually goes way over the target. The difference within the sights should be at about 300 yards.

So lets say the target is at 1600 yards, use 1600 yards for AP with the sights and 1300 yards for HE.

Not having a issue with the M10 as it behaves as usual. There is a huge difference even if converted into yards between using map ranging for the AP to hit. While the HE was as expected to hit where it should, the AP was requiring a 8-900 yard difference.. The site says AP for aim, if I put the aim at the distance the AP round should hit, it was falling far short. The method being used is that I use known and seen objects for quick ranging using the ingame map. I marked the bridge, it showed 2.2k from me, this tiger was between 4-600m closer to me. However using the AP site on the S76, that round had to be elevated from the 2400 mark to hit the tiger. My original estimate of 1600 was dead on for the HE round and I was also achieving HE hits low hull using the 1500m aimpoint.

I would expect that the 1600 estimate would have been on for the AP round, and well over the tiger when using the HE.

Do you see why I question this? This is how I use the M10, its as you say it works correctly and I have no issues with it, it seems backwards for the S76. I do not recall that as a issue previously that I have been having with the S76. I am using the same method for ranging prior to patch and still use it for the M10 with success.

[marcus33]

Do you see why I question this? This is how I use the M10, its as you say it works correctly and I have no issues with it, it seems backwards for the S76. I do not recall that as a issue previously that I have been having with the S76. I am using the same method for ranging prior to patch and still use it for the M10 with success.

Yes gotcha. Gonna try tomorrow offline on the range on the old 1.34.9 vs the new one. That should make things clearer.

[marcus33]

Right, tested offline S76 both 1.34.9 and latest build and they both behave in the same way. If the target is at 1000 yards, 1000 yards AP on sights hits right to the spot while HE at 1000 yards in sights hits the ground at about 1300 yards.

So it behaves basically exactly like the M10 and how we are used to as in AP corresponds to the sights and HE flies further.

Reading over your math again it seems also correct, the Tiger was probably at 1800+ meters, you may have exaggerated the distance from the bridge and he was more likely to be at 2k which should be about 2200 yards and puts us in the ballpark of where the AP rounds would hit him.

Also consider that the mark on map is ground level and when you shoot you aim at a slightly elevated spot to hit the target like the side or turret. If that round were to land on ground it would land probably 100 yards further than the Tiger you were aiming for.

Why the HE sighted had to be at about 1600 yards I don't know, I have no knowledge of the ratio to AP and if there's a log curve rather than linear to the offset between both but I do think so. The further your target it seems the higher the difference in the sights between HE and AP.

[DOC]

HE and AP have different ballistics, so they can't range the same as each other. At really close range there's going to be little in it, but as range increases, the difference increases with it. They are directly related, range and how different the ballistic result is.

[stankyus]

Right, tested offline S76 both 1.34.9 and latest build and they both behave in the same way. If the target is at 1000 yards, 1000 yards AP on sights hits right to the spot while HE at 1000 yards in sights hits the ground at about 1300 yards.

So it behaves basically exactly like the M10 and how we are used to as in AP corresponds to the sights and HE flies further.

Reading over your math again it seems also correct, the Tiger was probably at 1800+ meters, you may have exaggerated the distance from the bridge and he was more likely to be at 2k which should be about 2200 yards and puts us in the ballpark of where the AP rounds would hit him.

Also consider that the mark on map is ground level and when you shoot you aim at a slightly elevated spot to hit the target like the side or turret. If that round were to land on ground it would land probably 100 yards further than the Tiger you were aiming for.

Why the HE sighted had to be at about 1600 yards I don't know, I have no knowledge of the ratio to AP and if there's a log curve rather than linear to the offset between both but I do think so. The further your target it seems the higher the difference in the sights between HE and AP.

Thanks, that is certainly possible.