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Gun Data of the Day – Day 14

Today, we look at the .45-70, a cartridge that still sees use for sportsmen after over 140 years.

Parent case .50-90 Sharps
Case type Rimmed, tapered[1]
Bullet diameter .458 in (11.6 mm)
Neck diameter .480 in (12.2 mm)
Base diameter .505 in (12.8 mm)
Rim diameter .608 in (15.4 mm)
Rim thickness .070 in (1.8 mm)
Case length 2.105 in (53.5 mm)
Overall length 2.550 in (64.8 mm)
Rifling twist 1-20″
Primer type Large rifle
Ballistic performance
Bullet weight/type Velocity Energy
300 (Trapdoor) Lead PB 1,597 ft/s (487 m/s) 1,699 ft·lbf (2,304 J)
405 (Trapdoor) Lead FN 1,394 ft/s (425 m/s) 1,748 ft·lbf (2,370 J)
300 (Standard) JHP 2,069 ft/s (631 m/s) 2,852 ft·lbf (3,867 J)
300 (Strong) JHP 2,275 ft/s (693 m/s) 3,449 ft·lbf (4,676 J)
Test barrel length: 24″

Today’s Earworm

Gun Data of the Day – Day 13

Today, we look at something that’s near and dear to my heart – 7.62x54R, the centerfire cartridge that costs as little as .22LR.  It’s fought wars against itself and won every time!  It’s still in active production and military use, almost 125 years after its introduction in 1891!    You can use it to shoot, gut, quarter, and cook the deer all at the same time!

Case type Rimmed, Bottleneck
Bullet diameter 7.92 mm (0.312 in)
Neck diameter 8.53 mm (0.336 in)
Shoulder diameter 11.61 mm (0.457 in)
Base diameter 12.37 mm (0.487 in)
Rim diameter 14.40 mm (0.567 in)
Rim thickness 1.6 mm (0.063 in)
Case length 53.72 mm (2.115 in)
Overall length 77.16 mm (3.038 in)
Case capacity 4.16 cm3 (64.2 gr H2O)
Rifling twist 240 mm (1 in 9.45 in)
Primer type Berdan or Boxer Large Rifle
Maximum pressure 390.00 MPa (56,565 psi)
Ballistic performance
Bullet weight/type Velocity Energy
11.3 g (174 gr) HPBT 797 m/s (2,610 ft/s) 3,593 J (2,650 ft·lbf)
11.7 g (181 gr) FMJ 786 m/s (2,580 ft/s) 3,614 J (2,666 ft·lbf)
11.7 g (181 gr) SP 800 m/s (2,600 ft/s) 3,744 J (2,761 ft·lbf)
9.7 g (150 gr) FMJ 865 m/s (2,840 ft/s) 3,629 J (2,677 ft·lbf)
11.7 g (181 gr) SP 805 m/s (2,640 ft/s) 3,779 J (2,787 ft·lbf)
Test barrel length: 73cm, 28inch

Heads up – Free Ebook

To commemorate Father’s Day, the e-book of Tales of the Minivandians will be free for the next few days.

So, take as many as you need; we’ll make more.

Enjoy!

Today’s Earworm

Gun Data of the Day – Day 12

Today we look at something relatively new on the market, the FN Five-Seven

Calibre 5.7x28mm
Operating principle Delayed blowback
Overall length 208mm (8.2″)
Weight (empty magazine) 662 g (1.46 lb)
Barrel length 112.5mm (4.41″)
Trigger mechanism Single Action Only
Firing mode Single shot
Magazine capacity 20 rounds
Manual safety Yes
Maximum effective range 50m
Receiver Polymer

Gun Data for the Day – Day 11

Today, we pull out one of the longest running arguments I’ve known, 5.56 versus .223

 

5.56 Specifications:

Case type Rimless, bottleneck
Bullet diameter 5.70 mm (0.224 in)
Neck diameter 6.43 mm (0.253 in)
Shoulder diameter 9.00 mm (0.354 in)
Base diameter 9.58 mm (0.377 in)
Rim diameter 9.60 mm (0.378 in)
Rim thickness 1.14 mm (0.045 in)
Case length 44.70 mm (1.760 in)
Overall length 57.40 mm (2.260 in)
Case capacity 1.85 cm3 (28.5 gr H2O)
Rifling twist 178 mm or 229 mm (1 in 7 in or 9 in, originally 1 in 14 in)
Primer type Small rifle
Maximum pressure (EPVAT) 430.00 MPa (62,366 psi)
Maximum pressure (SCATP 5.56) 380.00 MPa (55,114 psi)
Ballistic performance
Bullet weight/type Velocity Energy
4 g (62 gr) SS109 FMJBT 940 m/s (3,100 ft/s) 1,767 J (1,303 ft·lbf)
4.1 g (63 gr) DM11 FMJBT 936 m/s (3,070 ft/s) 1,796 J (1,325 ft·lbf)
4.1 g (63 gr) GP 90 FMJBT 905 m/s (2,970 ft/s) 1,679 J (1,238 ft·lbf)

Test barrel length: 508 mm (20.0 in)

.223 Remington Specifications

 

Case type Rimless, bottleneck
Bullet diameter 0.224 in (5.7 mm)
Neck diameter 0.253 in (6.4 mm)
Shoulder diameter 0.354 in (9.0 mm)
Base diameter 0.376 in (9.6 mm)
Rim diameter 0.378 in (9.6 mm)
Rim thickness 0.045 in (1.1 mm)
Case length 1.76 in (45 mm)
Overall length 2.26 in (57 mm)
Rifling twist 1 in 12 inch (military style rifles use 1:7 to 1:10 to stabilize longer bullets)
Primer type Small rifle
Maximum pressure (SAAMI) 55,000 psi (380 MPa)
Maximum pressure (CIP) 62,366 psi (430.00 MPa)
Maximum CUP 52000 CUP
Ballistic performance
Bullet weight/type Velocity Energy
36 gr (2 g) JHP 3,750 ft/s (1,140 m/s) 1,124 ft·lbf (1,524 J)
55 (3.5 g) Nosler ballistic tip 3,240 ft/s (990 m/s) 1,282 ft·lbf (1,738 J)
60 (3.9 g) Nosler partition 3,160 ft/s (960 m/s) 1,330 ft·lbf (1,800 J)
69 (4.48 g) BTHP 2,950 ft/s (900 m/s) 1,333 ft·lbf (1,807 J)
77 (5 g) BTHP 2,750 ft/s (840 m/s) 1,293 ft·lbf (1,753 J)
Test barrel length: 24 inches (61 cm)

Gun Data for the Day – Day 10

Since yesterday was one side of the tacticool triangle, here’s another, the AK-47:

Ammunition Types 7.62 x 39 mm
Magazine Capacity 30
AMMUNITION
Name 7.62
Caliber/length 7.62 x 39 mm
Effective Range (m) 300
Muzzle Velocity (m/s) 710
Weight (kg) 4.876 loaded
Length (mm) 870
Cyclic Rate of fire (rd/min) 600
Operation Gas operated
Fire Mode Semi-automatic, Full automatic
SIGHTS Iron sites.

Kerfluffles

There have been a lot of controversies in the news lately, some real, some made-up, and some made out of smoke and mirrors.  Here are my thoughts on a few of them:

  • It is none of my business who sleeps with whom, assuming they’re all consenting adults, or what sex/gender/whatever they decide/realize they are.  The only other thought I have on this is that it isn’t exactly brave to wait until your multi-million dollar TV show is over to do something controversial.  It would have been braver to do this while there were cameras in the living room.  It would have been really brave to do something like this in, say, 1976, when the spotlight of the world was squarely on you and society hadn’t become a heck of a lot more accepting of people who swing to different fences.
  • Race ought to be a null value in society, but it isn’t.  Some can get past it, some can’t, and that’s on all sides of the argument.  To be honest, I don’t care what ethnic, racial, religious, or whatever pigeonhole someone wishes to slam themselves into.  Just be honest about who you are and how you got to where you are, and we’ll all get along a lot better.
  • I write what I want, I read what I want, I watch what I want, and I play what I want.  If you can’t handle that, then leave. Feel free to take your ball and go home, because we’ll have at least as much fun without you.  It’s just that simple.  If you want to turn it into a fight over who gets what corner of the public space, just remember, most of the people on my side are highly trained assholes, and we enjoy our work.
  • If your fiction can be easily described as gay cowboys eating pudding, then you’re missing the point of fiction.  I pick up a novel to be entertained.  If you can make me think while I read it, bravo, but I’m paying you to entertain me.  If I want to read something that will make me think, I’ll go back to non-fiction or a clearly-labeled book on religion, philosophy, or politics.  Now, bring on the exploding spaceships crewed by tall redheads who like medieval Japanese swordcraft.
  • People who use words like ammosexual, tactard, fudd, nazi, threeper, teabagger, or whatever, are not serious and we waste our time in trying to engage with them.  That doesn’t mean that someone can’t use the term to describe a friend, because there isn’t a guy reading this that hasn’t been called every filthy, degrading term in the book by his buddies.  I wouldn’t be surprised if it wasn’t the same with women.  I’m talking about the people who try to shut down debate by attaching an insulting term to their opponent, and both sides of the political spectrum do it.  If you do it to someone I admire, I’ll turn my back on you.  If you do it to my friends, then I will stand with them.  If you do it to me, don’t waste your energy. I’ve been insulted by the best, and there’s a good chance you won’t measure up to their standard.

Gun Data for the Day – Day 9

Here’s some information on an old warhorse, the M16A2:

Manufacturers Colt Manufacturing and Fabrique Nationale Manufacturing Inc.
Length 39.63 inches (100.66 centimeters)
Weight (without magazine and sling) 7 pounds, 8 ounces (3.40 kilograms)
Weight (with loaded 30 round magazine and sling) 8 pounds, 13 ounces (4.00 kilograms)
Bore Diameter 5.56mm (.233 inches)
Rifling Right-hand twist, 6 grooves, 1 turn in 7 inches
Maximum Range 3,600 meters
Maximum Effective Range (Point Target) 602 yards (550 meters)
Maximum Effective Range (Area Target) 875 yards (800 meters)
Muzzle Velocity 3,100 feet (945.5 meters) per second
Rate of Fire (Cyclic) 700-900 rounds per minute
Rate of Fire (Sustained) 12-15 rounds per minute
Rate of Fire (Semiautomatic) 45 rounds per minute
Rate of Fire (Burst) 90 rounds per minute
Magazine capacity 30 rounds
Unit Replacement Cost $586