I'm guessing you can't open the links I posted to Dave Cushman's Berdan Primer size web page.
IMHO, what you have is:
"Note J
Cup material 29 BWG (Birmingham Wire Gauge) RWS 6507 interchangeable with Eley 172 and used on many of the large Nitro calibres. Sometimes known as Oversize Berdan or Nitro Berdan. "
Primer--|Outside----|Cup--------|Thickness----|Cup----|--------|Manufacturer|
Number|Diameter---|Height-----|Of Base------|Material|Usage-|Or------------|
---------|mm 0.000"|mm 0.000"|mm 0.000"--|---------|--------|Supplier------|
126-----|6.34 0.250|2.83 0.111-|0.45 0.0180"|brass---|Note G|Kynock------|
172-----|6.45 0.254|3.38 0.133-|0.330 0.013"|brass---|Note J|Eley----------|
4500----|4.50 0.177|2.20 0.09--|0.40 0.0157"|---------|Note A|RWS---------|
4520----|4.50 0.177|2.10 0.08--|0.55 0.0217"|---------|Note B|RWS---------|
4521----|4.50 0.177|2.20 0.09--|0.40 0.0157"|---------|Note C|RWS---------|
5005----|5.00 0.197|2.20 0.09--|0.40 0.0157"|---------|Note D|RWS---------|
5608----|5.50 0.217|2.80 0.11--|0.70 0.0276"|---------|Note E|RWS---------|
5620----|5.50 0.217|2.65 0.10--|0.60 0.0236"|---------|Note F|RWS---------|
6000----|6.34 0.250|2.85 0.11--|0.79 0.031"--|--------|Note H|RWS---------|
6504----|6.45 0.254|2.35 0.90--|0.45 0.0177"-|--------|Note I| RWS---------|
6507----|6.45 0.254|3.40 0.133-|0.33 0.0130"|--------|Note J| RWS---------|
Notes for number based table
Note A
Intended for use in small pistol rounds like .25 ACP, .32 ACP, .380 ACP and some 9mm calibres.
Note B
Used in small rifle rounds like .22 Hornet, .222 Remington, 5.6 and some obsolete small calibres.
Note C
Sometimes noted as 'Parabellum primer' used in 9 mm Luger (9 x 19), Steyr and majority of pistol rounds that use 4.5 mm primers.
Note D
Used in large calibre pistol rounds. Also known as 'Medium Berdan'.
Note E
Commonly used in Europe for 7.62 NATO rounds, often known as 'standard NATO'.
Note F
The most common 5.5 mm Berdan primer for rifle calibres (90% of 5.5 mm types).
Note G
Produced around 1965 and used in Kynoch production ammunition and primed cases.
Note H
Used in .303 British and related calibres, sometimes known as 'quarter inch' or Large Berdan Rifle.
Note I
For the .577 Snider, .577-.450 Martini Henry, 43 Egyptian and others. Also known as Extra Large Berdan.
Note J
Cup material 29 BWG (Birmingham Wire Gauge) RWS 6507 interchangeable with Eley 172 and used on many of the large Nitro calibres. Sometimes known as Oversize Berdan or Nitro Berdan.