Ruger 45 Convertable is accurate?

S

Shooter 973

New member
I have a Ruger 45 convertable that I shoot a lot of 45 acp out of and it seems to be a very accurate handgun. But it shouldn't be.!!!! The bullets have to jump about 3/4 inch just to make it out of the cylinder before it jumps to the barrel. From my experiance with rifle shooting it has been shown that having the bullet jump to the riflings is not condusive to good accuray. Why doesn't it harm the accuracy of this handgun??? :confused: :confused: :confused:
 
I think the difference is pressure and velocity. When a revolver bullet (especially a jacketed bullet) hits the rifling, it tends to skid (tries to go straight as the rifling tries to turn it), and skid marks on a bullet are a definite indicator that it was fired in a revolver. But that skid is soon corrected as the bullet is forced further into the rifling.

With higher pressure and greater velocity, the bullet, once started in a straight line, would tend to skid even more and the lands would try to force it to bore diameter; the bullet then would never take the rifling properly, and accuracy would suffer.

Any other thoughts, anyone?

Jim
 
RAMBLING THOUGHTS

Good question.

First, discard 'rifle' comparison. We're talking (lower-pressure and velocity) handguns.

Next, we MUST consider the cartridge. The 45 ACP gives plenty of diameter for the gas pressure to work against. It has sufficient bearing surface. It has fair sectional density (for its velocity; I mean, comeonnow). 45 ACP cases seem to give symmetrical neck tension. Operating pressure is low.

Now, on to your gun!

You got lucky; you have an accurate gun. Don't care who makes it or how much it costs; there are straight shooters and stinkers.

That said, why does your gun, after allowing that (230g FMJ???) bullet to travel through the air in your cylinder, put the hole where you aimed?
Dunno.

Got some guesses.
Even distribution of gas pressure acting on the bullet base.
Tight(er) chamber dimensions, in your gun.
Holes line up.
Slower launch velocity reduces skidding (I recover many bullets -shot in snow- to inspect skidding).

Best guess -- the large surface area the gas pressure is working against more evenly distributes the pressure, reducing 'tipping' or 'tilt' as the bullets moves from the case until it reaches another obstruction and/or constriction.
 
I wish that I had .45 ACP cylinders for my Blackhawks. I've heard this same comparison regarding .22LR /.22Mag revolvers some shoot great some couldn't hit the broad side of a barn from inside the barn. I don't know the anwser.
 
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