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
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
drewhenrytntI 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
10 May 2009, 20:12
jeffeossoAndy
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
10 May 2009, 20:49
AfricanHunterquote:
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