AB Kestrel - MV temp from ammo, not ambient?

[Mr Flannel]

Caught this on YT



Todd Hodnett indicating that to accurately utilise MV temp function in AB Kestrel, shooter needs to ascertain temp of ammo itself, not the ambient/air temp? Is this correct?

If so, I’ve been doing it wrong...

 

[_Windrider_]

Caught this on YT



Todd Hodnett indicating that to accurately utilise MV temp function in AB Kestrel, shooter needs to ascertain temp of ammo itself, not the ambient/air temp? Is this correct?

If so, I’ve been doing it wrong...

He’s correct...................but no. Unless your ammo is sitting in the sun cooking, ambient temp is close enough. I mean if you want to be hyper technical you also have to consider a hot chamber and heat transfer to a cooler bullet and blah blah blah.

Just use ambient. Be smart about how you store your ammo

Fucking hodnett. Can’t stand this guy.

 

[Dthomas3523]

I did find the suggestion to freeze and heat anmo interesting as far as testing purposes.

But no, unless you’re gonna take a laser thermometer to the range and/or matches and do a bunch of extra work turning off the mv table and live environment readings, there’s not much point of messing with measuring the ammo temp over using ambient temp.

 

[Dthomas3523]

Also, someone correct my thinking here. But the kestrel doesn’t actually use DA. It uses temp, pressure, and humidity. It will calculate and show it on another screen, but doesn’t actually use it.

There’s no place to input either DA and a separate temp or an ammo temp as well as ambient temp.

Since the ambient temp affects the bullet flight and the ammo temp affects the MV......how would you go about using say a 30deg ammo temp (frozen) when it’s 85deg ambient outside?

Would you have to basically do all the testing and then turn the table on, manually input the temp as the ammo temp so the velocity is used, turn the MV temp off, and then turn the environment back to live? I think that’s what he was saying at the end, but I’m not 100% sure.

And what happens when it’s 30deg ammo and 85deg ambient AB wants to use a different velocity than your chrono’d to make something like a cdc work. That number would still only work when the ammo temp and the ambient temp were close to the same as those two numbers. So you’re back at the original “problem” he’s attempting to solve.

 

[_Windrider_]

Also, someone correct my thinking here. But the kestrel doesn’t actually use DA. It uses temp, pressure, and humidity. It will calculate and show it on another screen, but doesn’t actually use it.

There’s no place to input either DA and a separate temp or an ammo temp as well as ambient temp.

Since the ambient temp affects the bullet flight and the ammo temp affects the MV......how would you go about using say a 30deg ammo temp (frozen) when it’s 85deg ambient outside?

Would you have to basically do all the testing and then turn the table on, manually input the temp as the ammo temp so the velocity is used, turn the MV temp off, and then turn the environment back to live? I think that’s what he was saying at the end, but I’m not 100% sure.

And what happens when it’s 30deg ammo and 85deg ambient AB wants to use a different velocity than your chrono’d to make something like a cdc work. That number would still only work when the ammo temp and the ambient temp were close to the same as those two numbers. So you’re back at the original “problem” he’s attempting to solve.

You are correct. It will give you DA in weather mode, but in the ballistics it uses pressure temp and humidity.

 

[Mr Flannel]

Thanks gents. I’m simply going to stick with using ambient temp and be careful to avoid creating extreme temp differentials between stored ammo and ambient temp. There are too many other variables at play (and too much f*ck around involved) to justify otherwise. Being a bit of a simpleton, I’m not keen on adding more (and possibly pointless) steps to the firing solution process.

 

[seansmd]

Also, someone correct my thinking here. But the kestrel doesn’t actually use DA. It uses temp, pressure, and humidity. It will calculate and show it on another screen, but doesn’t actually use it.

There’s no place to input either DA and a separate temp or an ammo temp as well as ambient temp.

Since the ambient temp affects the bullet flight and the ammo temp affects the MV......how would you go about using say a 30deg ammo temp (frozen) when it’s 85deg ambient outside?

Would you have to basically do all the testing and then turn the table on, manually input the temp as the ammo temp so the velocity is used, turn the MV temp off, and then turn the environment back to live? I think that’s what he was saying at the end, but I’m not 100% sure.

And what happens when it’s 30deg ammo and 85deg ambient AB wants to use a different velocity than your chrono’d to make something like a cdc work. That number would still only work when the ammo temp and the ambient temp were close to the same as those two numbers. So you’re back at the original “problem” he’s attempting to solve.

I think he tries to get into that in the end of the video?