Folks,
Firing very soft squishy bullets out of revolvers creates several dynamics that cause accuracy and consistancy problems. These problems apply strictly to revolvers.
First, When the primer and powder ignite, that soft bullet is instantly under pressure and will slug up to fill the diameter of the chamber throat. A harder bullet wont do this. Lets say we are talking about the 38 SPL cartridge. Your chamber throats are supposed to be sized about .359 inch, but in some revolvers they are bigger or worse yet in some revolvers they vary from chamber to chamber--some throats may be .359 while others may be bigger, much bigger, perhaps .362+ in the same gun. When those soft bullets slug up to differeing throat dimensions, it causes a huge inconsistancy in accuracy and in extreme velocity spreads, BUT WE ARE JUST GETTING STARTED.
Second, When those soft bullets move out of the cylinder and hit the forcing cone, they again slug up to fill the forcing cone, (some forcing cones are huge) but then, as they enter the grooves and lands, the barrel has to size the bullet back down to barrel dimensions. This is a lot of gyrating for that poor bullet and it causes accuracy and more extreme velocity spread problems. So, it is very difficult to get a soft bullet at pressures above 14,000 cup, to shoot as accurate as a harder bullet. We could (and have) fire that same soft bullet out of a rifle or a semi auto handgun and have none of the above dynamics and normally get much better accuracy.
While we want soft expanding bullets, for all their terminal advantages, shooting them out of revolvers is always a compromise. Ive never been happy with the accuracy of our super soft 158gr. bullet, especially at our +P speeds, but they have always been accurate enough for the inteneded purpose. While I tend to want every thing perfect in regards to my ammo, some limiting factors end up requiring a less than perfect solution. No super soft bullet will give consistantly wonderful accuracy out of a variety of revolvers. The good news is, they are accurate enough.
Firing very soft squishy bullets out of revolvers creates several dynamics that cause accuracy and consistancy problems. These problems apply strictly to revolvers.
First, When the primer and powder ignite, that soft bullet is instantly under pressure and will slug up to fill the diameter of the chamber throat. A harder bullet wont do this. Lets say we are talking about the 38 SPL cartridge. Your chamber throats are supposed to be sized about .359 inch, but in some revolvers they are bigger or worse yet in some revolvers they vary from chamber to chamber--some throats may be .359 while others may be bigger, much bigger, perhaps .362+ in the same gun. When those soft bullets slug up to differeing throat dimensions, it causes a huge inconsistancy in accuracy and in extreme velocity spreads, BUT WE ARE JUST GETTING STARTED.
Second, When those soft bullets move out of the cylinder and hit the forcing cone, they again slug up to fill the forcing cone, (some forcing cones are huge) but then, as they enter the grooves and lands, the barrel has to size the bullet back down to barrel dimensions. This is a lot of gyrating for that poor bullet and it causes accuracy and more extreme velocity spread problems. So, it is very difficult to get a soft bullet at pressures above 14,000 cup, to shoot as accurate as a harder bullet. We could (and have) fire that same soft bullet out of a rifle or a semi auto handgun and have none of the above dynamics and normally get much better accuracy.
While we want soft expanding bullets, for all their terminal advantages, shooting them out of revolvers is always a compromise. Ive never been happy with the accuracy of our super soft 158gr. bullet, especially at our +P speeds, but they have always been accurate enough for the inteneded purpose. While I tend to want every thing perfect in regards to my ammo, some limiting factors end up requiring a less than perfect solution. No super soft bullet will give consistantly wonderful accuracy out of a variety of revolvers. The good news is, they are accurate enough.