Thursday, March 26, 2015

THE .32 SMITH AND WESSON





In 1878, Smith and Wesson introduced the
Model No. 1 1/2 Single Action Revolver and with it the .32 S&W cartridge. The .32 S&W is a straight walled, rimmed, center fire cartridge that was originally loaded with black powder. It has been loaded with smokeless powder for at least 70 years now.


The .32 S&W should not be confused with the .32 S&W Long, which is simply a longer case loaded with more powder and generally the same bullet.

In fact, the original .32 S&W is sometimes referred to as the .32 S&W short.


My affiliation with this obsolete round comes from the Iver Johnson safety revolver that I purchased for my Dad a few years back. We purchased several boxes of magtech factory ammo for it. Our gun is a later production item in good shape, so I was not too concerned with it blowing up in my face. That said, the magtech does seem to be a little on the hot side. Some of that might be the 85 grain bullet as opposed to the 78 grain I currently load. The heavier the bullet, the stiffer the recoil.

  I have been loading the magtech brass topped with a 78 grain rim rock rn bullet over 1.6 grains of Unique. That load is good for right around 400 FPS over my crony. Not fast no, but plenty accurate and easy on the gun. Yes it is possible to hit something with one of those guns. I am currently working up a load using titegroup. I recently bought a chamber adapter for my Mosin Nagant that allows the use of .32 pistol ammo in the old battle rifle. That allows me to work up a load safely in a chamber designed for much higher pressures. Even if I overload it to the extreme, the gun is more than capable of handling the pressure. Once the fps is comparable to the Unique load, I can load it into the 100 year old revolver with some confidence. Loading these little jems is such fun. The magtech brass has held up very well. The only downside is the light powder charges. My powder thrower just won't dispense that low of a charge and powder dippers can be unreliable at that small a charge.


Modern day carry guns can provide much more powerful cartridges in a package about the same size as the old .32 revolvers. So the case for carrying one of the old antiques is just not there. And there goes the case for the .32 S&W as a modern defensive round. Though, that is exactly what it was intended for. And really, compared to the .25 acp or .22 lr, it is a better round. Both of those rounds see plenty of use in carry guns today, though they both produce less energy than the old .32.

It was the .32 S&W that took the life of President McKinley in 1901, though the 2 bullets that struck him did not cause his immediate death.




Tuesday, March 3, 2015

All about Bullets

Bullets, aka projectiles, are the thing that exits the barrel of a gun and impacts the target.  A lot goes into getting that bullet to get to the target, but this article will concentrate on the bullet itself and the different designs and materials.

Early Bullets, prior to the American civil war thereabouts, were typically soft lead.  That is they were basically pure lead or an alloy that was just slightly harder than pure lead.  That was ok because the large caliber bullets used in early guns were not intended to be loaded to anything over maybe 1000 feet per second.  At those low velocities and large bore sizes soft alloys worked just fine.  In fact the mini ball of civil war fame relied on the soft lead alloy to function.  As the black powder burned under the bullet, the hollow base expanded and sealed the bore from the gasses.  



At the end of the 19th century an absolute revolution in small arms ammunition occurred.  Black powder, which had been the only powder since the invention of the gun, was replaced by smokeless powders which are made from nitroglycerin, nitrocellulose, or a combination of both.  Along with this change in powder came changes in cartridge design.  Metallic cartridges had now replaced muzzle loading and other tedious loading procedures.  The self contained metallic cartridge was at first used with the same old black powder.  When they started loading them with smokeless, it was a marriage made in heaven.  


Black powder could only create so much pressure, so therefore the bullets used with it were rather large.  Big bullets traveling slowly (600-1000 fps)  do a lot of damage.  But with smokeless powders you can create great pressures and do the same damage with a smaller bullet.  Instead of a .50 caliber bullet doing say 600 fps.  You now had a .30 caliber doing 2000 fps.  The problem became that lead bullets just could not with stand the speeds they were being propelled at. Enter the jacketed bullet.  We'll learn more about that later.

Here is the low down.

Alloy is the term used to describe a mixture of metals.  Pure lead is very dense and works well in low speed antique applications.  However it just does not perform in smaller, faster applications.  leading of the bore is one issue.  One way to avoid the inherent problems of lead bullets is to mix the lead with other metals to make an alloy that is harder than pure lead.  These bullets are often termed "hard cast" bullets.  Metals like antimony and tin are added to the lead.  The resulting alloy is much harder than lead and perform well up to a point.  Unlike pure lead there is little or no deformation or expansion when hard cast bullets strike a target.  Like lead bullets, hard cast bullets need to be lubricated and as such will have grease groves to hold lubricant.

  Hard cast bullets work well in pistols of all types as well as rifles, so long as they are loaded to an appropriate speed.  Cast bullet loads often use powders designed for pistol and shotgun work.  One way of getting more speed out of a cast bullet is the use of a gas check.  Simply put, gas checks are copper or other soft metal attached to the bottom of a cast bullet that resist the burning powder's heat and pressure.  
Image result for gas check

Most modern factory bullets are of the jacketed variety.  Indeed, you just can't push cast bullets at the velocities developed in modern rifle loads, weather gas checked or not.  Jacketed bullets are made differently than cast bullets.  The jacket is usually made of copper.  Think of it as a gas check that covers the whole bullet.  What we see is actually just the jacket.  The lead is inside.  It is not cast, but cut from a roll of soft lead wire and inserted in the copper jacket.  Here are some terms you need to know.

Full metal jacket.  The jacket encloses the entire bullet.  These may or may not have an exposed lead base, but the sides and top of the bullet are enclosed in copper.
Hollow point.  These bullets have a cavity at the top which cause the bullet to expand when the target is impacted.  This design stops over penetration.
Image result for hollow point bullets

Soft point bullets have an exposed soft lead tip that deforms and mushrooms upon impact.  Like a hollow point, they aim to stop over penetration and deliver the kinetic energy to the target.
Image result for soft point bullet
Image result for hard cast bulletsAs you have probably noticed, bullets come in all shapes and sizes.  Flat point, spire point, wad cutter, semi wad cutter.  The nomenclature can be confusing.  All designs have a purpose.  Some are appropriate for pistols but not rifles, Some are great for varmints, some self defense.  Some are for big game.  It all depends on what you are shooting it out of and what you are shooting at.  I've included some pictures of different bullet designs.


Image result for wadcutter