World at War: 700 Yards Mayhem - British Sniper vs German Sniper - No4 MKI T!

[Alan de Enfield]

That is very cool info. Now, so it looks like USA didn't have a good track record since WWI with British 303. Going back into the 40's, seems that Winchester again chocked and their RAF ammo was downgraded to "non aircraft use only". However, we think this is mainly because of the poor quality control on primers, fear of having dud round on the aircraft, right? Because performance wise, not talking about shooting, but from the doppler radar, rounds were consistent on the velocity and SD: 17fps is not bad for mass produced ammo.
I have one more question, accuracy wise, how is the Winchester ammo comparing to regular British surplus production?

My understanding was the dimensional consistency. I have not been able to identify if this was bullet dimensions, or case dimensions. I am guessing that as it resulted in jamming / blockages / non-ejection that it was inconsisten case dimensions.


Just as another example ( later manufacture and now made to SAAMI dimensions) the difference between US manufactured (commercial) 303 and 'mil-spec' 303 dimensions.

The Win cases are the 'thin ones' and the Prvi-Partisan are the 'thicker ones'. Using the Win. cases with the thin rims, can result in you increasing your effective headspace by ~ 5 thou. The Win. and Rem. tend to be at the bottom end of the specification (Min spec 0.054") whilst the PP and Mil-Spec tend to be around the top-end (Max spec 0.064")

Notice also how thin the 'SAAMI' cases are around the "web"