MoS is correct though.
I was hoping someone else would provide the solution, now I won’t have to tax my brain posing another. 
Which bullet was copied (country and designation please) and mated with the .30-06 to result in the short lived .30 M1 cartridge, and why was this deemed necessary?
Swiss boat-tailed spitzer. Increased range, especially for machine guns.
JT
You’ll have to give me the designation to get your cookie! But otherwise correct…
Forget it, it is GP 11
Your question!
What is GP11? Swiss designation?
John Browning’s famous cal. .45 pistol, the U.S. Model of 1911 (see avatar), was re-designated M1911A1 in the 1920s after several miinor modifications. What does the “A” stand for?
JT
Quote: “My thruppence worth”
The terms are, Ha’pence, pence, tuppence, and thrippence.
A is for apple, I mean addition, I think
Proword NOWAH
Except for the soft items referred to in Cockney rhyming slang, when did you last use - or even see - a thruppenny bit ?
Who did your English colloquial dictionary, Dick van Dyke ? 
No-one brought up east of the Atlantic would ever dream of using the phrase “my pence worth,” and “my tuppence worth” would raise a smile in some areas. “Thrippence worth” is not something I personally have heard, but there may well be a remote community where it is in common use.
“My ha’pence worth” would seem to be another comment straight from Bert the Sweep’s vocabulary, “ha’penn’orth” or “ha’penneth” are regularly used by those familiar with real money, ie Lsd.
Actually the term was written as ‘thruppence’ purely to aid the comprehension of chimneysweeps from West Plains, Missouri and other Colonials whose mother tongue is not English.
To get the full phonetic experience it would be written; ‘fruppence’ or, allegedly, ‘phruppence.’ 
Neither one.
JT
Masterpiece Theater.
dang it, was i close
A stands for “alteration”
Correct.
JT
The first German experimental assault rifle was designed by Vollmer in the mid 1930s. What was it called, what calibre was it in, and what was its principal of operation?
Would that be the muzzle-trap Vollmer Machinenkarabiner M35 in 7.75 x 40 (7.75 x 39) Geco pushing 147gr at about 2350 fps and sporting a 20 rd mag by any chance ?
Another question, this time relating to an earlier one.
The 30 M1 cart was only in service very briefly, give two reasons for this.
I know the answer, but I’ll give someone else a chance…
Ordnance experienced difficulty adapting the cartridge to the M1 Garand rifle, so returned to the 150-grain flat based bullet, designated M2.
That’s only one reason, but offhand I can’t think of the other.
JT
Unfortunately, no it is not. It is a myth. The M1 cartridge works just fine in the Garand, see Hatcher.
Keep trying!