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.475 #2 Ballistics

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10 May 2009, 19:54
drewhenrytnt
.475 #2 Ballistics
I don't have the rifle, but was given a ctg in a handful of big bore for my collection. I figured I would be more likely to get correct responses here than from the guys who just collect ctgs. Bullet diameter .483? What kind of velocity and bullet weights/designs were available when this ctg was in its heyday? Was this ctg as effective as it was intended to be? Any of ya'll actually shoot or use one of these?

Andy


We Band of Bubbas
N.R.A Life Member
TDR Cummins Power All The Way
Certified member of the Whompers Club
10 May 2009, 19:59
Homebrew
.475 No.2 Nitro Express
Type Rifle
Place of origin Britain
Specifications
Bullet diameter 0.483 in (12.3 mm)
Neck diameter 0.51 in (13.0 mm)
Shoulder diameter 0.547 in (13.9 mm)
Base diameter 0.576 in (14.6 mm)
Rim diameter 0.665 in (16.9 mm)
Case length 3.49 in (89 mm)
Overall length 4.26 in (108 mm)
Primer type Berdan 0.254 inch
Ballistic performance
Bullet weight/type Velocity Energy
480 gr (31 g) 2,200 ft/s (670 m/s) 5,170 ft·lbf (7,010 J)
500 gr (32 g) 2,150 ft/s (660 m/s) 5,140 ft·lbf (6,970 J)

Source: Barnes & Amber
10 May 2009, 20:02
drewhenrytnt
I am guessing those ballistics are using long sticks of cordite. Wonder what modern powders could do in a really strong rifle running around 65K psi? Just daydreaming.



AB


We Band of Bubbas
N.R.A Life Member
TDR Cummins Power All The Way
Certified member of the Whompers Club
10 May 2009, 20:12
jeffeosso
Andy
if at .475 bullet, then
www.470mbogo.com the BEST bigbore that there is

that is to say, the 470mbogo is basically a boltaction 470 NE case ... and shows what you can do if you jack up the pressure


opinions vary band of bubbas and STC hunting Club

Information on Ammoguide about
the416AR, 458AR, 470AR, 500AR
What is an AR round? Case Drawings 416-458-470AR and 500AR.
476AR,
http://www.weaponsmith.com
10 May 2009, 20:49
AfricanHunter
quote:
Originally posted by drewhenrytnt:
I don't have the rifle, but was given a ctg in a handful of big bore for my collection. I figured I would be more likely to get correct responses here than from the guys who just collect ctgs. Bullet diameter .483? What kind of velocity and bullet weights/designs were available when this ctg was in its heyday? Was this ctg as effective as it was intended to be? Any of ya'll actually shoot or use one of these?

Andy B
aka South Texas Sasquatch


Rest assured it is used and I have used it. It does the job as intended