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Adding a caliber

749 Views 11 Replies 6 Participants Last post by  hauki
I’ve been very happy with .357 Sig as a do everything I need caliber and I was always happy not having to add a handgun caliber to my home. Well, along came a P210 Legend and now I’ve added 9mm to my home. It has started me thinking that at least one other handgun should be 9 capable but which one P320 or P229?
This will be for range use only, and I’d like to choose the less expensive option. I think my 229 only needs a barrel (I know the sights are different but feel it can be compensated with technique) but the 320 should be a complete slide. If the 229 really should have a complete upper as well, do I need to look for a certain spec to be compatible with an AD serial number?
Appreciate any help with my dilemma!!
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If your P229 is in .357 Sig, then a Bar Sto conversion Barrel in 9mm would be fine, as well as a Recoil Spring. Should be able to use the .357 Sig sight without problem. The fitting of the barrel, will have some influence on that as well.

Font Rectangle Parallel Electric blue Number
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Thanks Willard!
I’m curious why the Bar Sto is recommended but not a factory Sig 9mm barrel?
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With P229s, the .357 Sig/.40 S&W Barrels have larger outside diameter tubes, than the 9mm factory barrels, so the factory barrels cannot lockup as securely in the slide. This is in addition to the hood extension width. The OEM Barrels are sized to fit their respective breech cuts, where the 9mm is 0.030" narrower than the .357/.40 cut, so the "Conversion" 9mm Barrel will have the wider .357/.40 hood extension width. allowing tighter barrel lockup.

With P226s all barrel outside diameters are the same, regardless of caliber, so reasonable lockup is maintained even if there is a narrower hood extension.
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With P229s, the .357 Sig/.40 S&W Barrels have larger outside diameter tubes, than the 9mm factory barrels, so the factory barrels cannot lockup as securely in the slide. This is in addition to the hood extension width. The OEM Barrels are sized to fit their respective breech cuts, where the 9mm is 0.030" narrower than the .357/.40 cut, so the "Conversion" 9mm Barrel will have the wider .357/.40 hood extension width. allowing tighter barrel lockup.

With P226s all barrel outside diameters are the same, regardless of caliber, so reasonable lockup is maintained even if there is a narrower hood extension.
Your knowledge is simply outstanding!!!
Thanks for the quick response and sharing the vast amount of experience.
The BarSto pieces add up quick, $323 without their fitting or tax. It’s a little disappointing that this P210 can cause so much drama in my life.😎
Thanks again,
Tom
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...also you'll need 9mm magazines...
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Take a look at the SP2022.
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...also you'll need 9mm magazines...
Yep, figured that goes without saying, they’re the easy part of the equation. Making up my damm mind about which one to start with is another story. 😎
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Take a look at the SP2022.
Enabler!
I’m not looking for a new pistol (yet🤣🤣), just want to be able to shoot 9 in one I already own.
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I just received a complete full size 9mm slide with a Romeo 1 red dot for my P320. I don’t have a scale to truly compare the two but the 9 seems to weigh a lot less, has anyone else noticed this? I’m tempted to buy a scale to satisfy my curiosity but if someone else already knows for sure it’d help put my mind at ease.
Thanks!!
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I just received a complete full size 9mm slide with a Romeo 1 red dot for my P320. I don’t have a scale to truly compare the two but the 9 seems to weigh a lot less, has anyone else noticed this? I’m tempted to buy a scale to satisfy my curiosity but if someone else already knows for sure it’d help put my mind at ease.
Thanks!!
I took these some time ago. Maybe they can be helpful…
Wood Post-it note Handwriting Trigger Gun barrel
Revolver Air gun Trigger Handwriting Wood
Post-it note Trigger Material property Handwriting Gun barrel
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