Most Wheeled AFV's by thier nature, do not have thick Armour. This would hinder performance on cross country driving. Being wheeled it would have a tendancy to sink in softer ground. Recce Vehicles Armour as a general principle, is thick enough at 15mm to stop most small arms fire & shrapnel fragments.
.50" Cal Browning is a HEAVY Machine Gun & a VERY potent round! I know, I used to manufacture & test fire them on a VERY regular basis. At 800-900 Meters down on Lydd Ranges in Kent. We used to fire at 432's 434'2 & Saracens. At lunch break, we would walk down to the impact area & look at out handywork. I can tell you now, they were riddled with holes! So much so, that after 4 months of this, we were informed that we could not test fire our guns against these targets as they were destroying them so the Army didnt have a lot left to shooot at!
We have (& still do have) a dedicated range allocated to 'The Company' & used SOLEY for .50" Cal testing.
The Ammo we used was EX Brit Army stock. It was OBSERVING Ammo, IE: Copper jacket,Steel core & a Magnesium tip. This meant that when the Projectile hit something 'Solid'. There was a bright flash.
These rounds were developed for Tanks in the ranging gun role. You fired a burst, if on Target, you saw a few flashes, switched to main armamant & 'Let one go'! Of course this is now superceeded by laser rangefinders Etc.
We bought a Million rounds from the M.O.D @ a 1p a Round. All in link & boxed up in containers of 200 rounds. It had stood outside for years in an Ammo Dump 'Somewhere' in Europe & was deteriorating on the outside of the containers. Inside, no problem, it was as fresh looking as the day it was made!
However, the Ammo itself had deteriorated a bit. When we fired it off in bursts, there was sporadic expolsions from the guns muzzle which at first was a bit disconcerting! It was discovered that the magnesium had 'settled' just enough to allow the AP cores to move forward during firing inside the copper 'envelope'. This made it 'explode' when exiting the barrel. The resultant flash & bang made us jump at first! But, after investigation, we carried on & got used to it. After firing & cleaning up the firing point. There was a huge black semi-circle in front of the barrel muzzle area & LOADS of copper fragments scattered all around. this was the 'shrapnel' from the exploding envelopes / jackets after it had 'gone off'!
I picked up a couple of the AP cores from the impact area that had gone right through the Armour. I used them in the workshop as centre punches! To this day, they have never gone blunt & ever needed sharpening. Brilliant steel!
Mike.