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Too many apples and oranges in one conversation for me.
First? BP dating and what is safe? Typically, BP guns were considered pre 192K for a serial number on a SAA. No one seems to actually know where that number came from however or has proof the metallurgy changed at 192K. For my own use I prefer a gun with Colt's VP stamp. They were "verified proofed" by Colt for a reason. The VP stamp is more typically 1906. Victorio has posted the VP transitional serial numbers many times. The VP stamp certainly was not a production stamp much earlier THAN 1906/1907 by the examples we actually see.
(15) Colt SAA "VP" proof mark? | Colt Forum
Reality and actual use?
As most of us know already the early BP Colt SAA doesn't generally just "blow up" in use with smokeless.
But if there is going to be a problem it is generally with a 45 caliber gun. Cylinder walls are thinner, lock notch is scary thin, and the bullets are heavier (255 gr) in a 45 Colt.
Every other caliber has more metal at the cylinder lock slot and cylinder walls and is shooting a lighter bullet. Stronger cylinders and less pressure because of it. The smaller caliber guns have lower pressures compared to a 45 Colt.
Bottom line? I don't shoot early, pre 1907 45 cylinders with smokeless. I don't have the same worries with a 200gr bullet in a 44-40 or a 180gr bullet in a 38-40 or any worry at all with a 115gr bullet in a 32-20. Easy enough to replace an old cylinder with a new one from a 2nd Gen gun if you just have to shoot an earlier gun. A lot more going on to make an antique Colt "unsafe" than just the BP/smokeless conversation. Caliber and condition, are a bigger concern to me. Better yet, if you really want to shoot and antique Colt, save the Colt, buy a Pietta.
Educate yourself as to what is safe and what isn't for your own use, and most importantly, why. Or just stick to BP.
The easy answer to this conversation IMO? If you own a Long flute and what to shoot it? All the long flute guns were made up around 1915. We know all the SAA guns were VP proofed by Colt prior to 1915. I would not be in any hurry to shoot an original long flute SAA in 45 Colt. I'd be way less concerned about the other caliber Long Flute guns. But for good measure, in any caliber, I'd simply have a new long flute cylinder cut and line bored. Then you can shoot the gun with smokeless and no worries. I've done that with three long flute guns myself. One in 45, and two more in 38-40.
First? BP dating and what is safe? Typically, BP guns were considered pre 192K for a serial number on a SAA. No one seems to actually know where that number came from however or has proof the metallurgy changed at 192K. For my own use I prefer a gun with Colt's VP stamp. They were "verified proofed" by Colt for a reason. The VP stamp is more typically 1906. Victorio has posted the VP transitional serial numbers many times. The VP stamp certainly was not a production stamp much earlier THAN 1906/1907 by the examples we actually see.
(15) Colt SAA "VP" proof mark? | Colt Forum
Reality and actual use?
As most of us know already the early BP Colt SAA doesn't generally just "blow up" in use with smokeless.
But if there is going to be a problem it is generally with a 45 caliber gun. Cylinder walls are thinner, lock notch is scary thin, and the bullets are heavier (255 gr) in a 45 Colt.
Every other caliber has more metal at the cylinder lock slot and cylinder walls and is shooting a lighter bullet. Stronger cylinders and less pressure because of it. The smaller caliber guns have lower pressures compared to a 45 Colt.
Bottom line? I don't shoot early, pre 1907 45 cylinders with smokeless. I don't have the same worries with a 200gr bullet in a 44-40 or a 180gr bullet in a 38-40 or any worry at all with a 115gr bullet in a 32-20. Easy enough to replace an old cylinder with a new one from a 2nd Gen gun if you just have to shoot an earlier gun. A lot more going on to make an antique Colt "unsafe" than just the BP/smokeless conversation. Caliber and condition, are a bigger concern to me. Better yet, if you really want to shoot and antique Colt, save the Colt, buy a Pietta.
Educate yourself as to what is safe and what isn't for your own use, and most importantly, why. Or just stick to BP.
The easy answer to this conversation IMO? If you own a Long flute and what to shoot it? All the long flute guns were made up around 1915. We know all the SAA guns were VP proofed by Colt prior to 1915. I would not be in any hurry to shoot an original long flute SAA in 45 Colt. I'd be way less concerned about the other caliber Long Flute guns. But for good measure, in any caliber, I'd simply have a new long flute cylinder cut and line bored. Then you can shoot the gun with smokeless and no worries. I've done that with three long flute guns myself. One in 45, and two more in 38-40.