I would agree with Badger that they are not reloads, at least in the instance of those with TZZ (Isreali) headstamps. All cartridge characteristics are correct for the TZZ ammo of the time. If not an Israeli bullet, then the bullets were either supplied to them by the US, or the Israelis supplied primed-empty cases, in my view.
I cannot explain this bullet in a WRA 53 case, but once again, the case, primer and primer seal all go together as original WRA 1953 production of this caliber. It may be an instance of bullet exchange - that is, removing the FMJ bullet and substituting the projectiles in question here, with perhaps a new powder charge to boot. However, I would say the primer and seal on Pat’s W R A 53, as well as the absence of any visible ejector mark, would indicate all case-components of original manufacture by Winchester.
I am interested that these are remembered as being used for match shooting, I assume by Army teams. The one I have was, for quite a while, the only one I had ever seen or heard of. I even speculated that it was some sort of un-caught deformation, in the manufacturing process, of the bullet itself. The perfect execution of manufacture of its shape eventually made me discard that option. I wish I had the box for the Israeli cartridge.
I agree with the comments on the poor feeding of the classic 185 grain SWC FMJ bullet. All of my .45s were throated, and yet three out of four were unreliable with that bullet. Precisely why I used the H&G #68 200 grain lead SWC which, when properly seated and taper-crimped, feed not only in all four of my regular pistols, but also perfect feeding in my Remington-Rand, unaltered M1911A1. I could make further comments of the flexibility of its use, but I fear that would draw me into powder charges, and make this a prohibited reply. (I agree wholly with that rule, by the way).
If anyone has a box label for this bullet-loading, especially in TZZ Ammo, please post a picture of it. I cannot find any index number or other mention of it in any of my IMI catalog literature.