Just Saw a Ruger GP100 .357 7 Shot

The short flutes on the 7-shot GP100 (and the 8-shot version) are a direct result of engineering and safety requirements, not just an aesthetic choice.
 
Shorter flutes add strength. Some makers use unfluted cylinders in their increased capacity models. Flutes aren't needed, just "the usual" so expected. No flutes, less steps and cost in production too. But most likely more profit not lower price.
 
Shorter flutes add strength. Some makers use unfluted cylinders in their increased capacity models. Flutes aren't needed, just "the usual" so expected. No flutes, less steps and cost in production too. But most likely more profit not lower price.
I always thought the flutes were to give a greater cooling surface to dissipate heat generated from firing. But I can see why shorter flutes would make the cylinder stronger, especially since the rounds are closer together. Thanks!
 
Everything can have a downside though. No flutes mean more weight and mass rotating. Harder to get in motion for double action and harder to stop when the cylinder stop (bolt) pops into the notch. That means accelerated wear on the notch and bolt.
Guys shooting fast double action or guys speed cocking single action will see peening much quicker.
 
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I would assume it's for aesthetic purposes. Flutes have no bearing on strength one way or another. That's a myth.
 
Odd number of chambers means the notches are between chambers. Which also makes for a stronger cylinder.

The shorter flutes may be because of the notches? Odd number means notches and flutes are lined up.
 
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Yes, less or no flutes means more cylinder weight...However, subtract the weight of the metal removed for the 7th chamber (and its shorter flute) and even with the shorter flutes I'd guess the weight is about the same.

Maybe someone who owns both a 6 chamber and 7 chamber model can weigh the cylinders and give us the facts?
 
I'm purty-sure that flutes first came about as a way to reduce weight....After a while, flutes came to be what was expected, then non-fluted cylinders began re-appearing on certain models in hopes of creating a perceived cool-factor, or as in the case of the Super Blackhawk, adding weight to help tame some of the recoil....As for 7-shot (or even 9-shot) six shooters, me thinks that originally started as an attempt to "keep up with the Jones" relative to the higher ammo capacity offered by semi-autos. Thinking of the old High Standard Nine-series here, but yeah, other manufacturers have since offered "more than six shots" with larger bore models since....I guess it's all good.

DGW
 
What is the barrel length and what is its price! I bought a 6" Ruger GP100 on line about 5-6 years ago for $670, plus shipping.It has been great and NO issues. at THE TRIGGER PULL IS REALLY LOW FOR A DA, so perhaps the previous owner (or previous ones) had it modified!
 
Odd number of chambers means the notches are between chambers. Which also makes for a stronger cylinder.

"The shorter flutes may be because of the notches? Odd number means notches and flutes are lined up."
Bingo! Notice the 6 shot GP, the flutes are further back than the front of the notches. The 7 shot Smith on the right shows the flutes aligned with the notches. So theoretically, Ruger had to shorten theirs up some. Notice the Sec Six had smaller flutes, more like the Smiths, while the GP's got larger all the way around.
 
What is the barrel length and what is its price! I bought a 6" Ruger GP100 on line about 5-6 years ago for $670, plus shipping.It has been great and NO issues. at THE TRIGGER PULL IS REALLY LOW FOR A DA, so perhaps the previous owner (or previous ones) had it modified!
This one, new, is 7 shots, the action feels different than a six shot, not as good, the price is about $1,100.
 

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