P-16 40 S & W convert to 10 mm

[bayjoe]

I would like to convert my P-16 to 10mm.
Is it better to buy the entire slide assembly or just barrel and spring?

[davidalyn]

Originally Posted by bayjoe

I would like to convert my P-16 to 10mm.
Is it better to buy the entire slide assembly or just barrel and spring?

A 10mm Para ramped barrel and 22 lb. recoil spring should get the job done. Some barrel fitting may be required.

[davidkachel]

Wouldn't you also need different mags? Or are you planning to make short 10mm rounds which of course would necessitate lighter loads because of the higher pressure from being short?
And in that case, wouldn't hot 40's do about the same thing?

Not to disparage Para. I have the hots for a 16-40 myself.
But for 10mm it's probably better to go with a gun designed for it.
I have an EAA Witness Elite Match (about $550 on gun broker). It functions flawlessly and is made for the 10mm.
If Para made a 10mm, I'd be all over it.

[davidalyn]

Originally Posted by davidkachel

Wouldn't you also need different mags? Or are you planning to make short 10mm rounds which of course would necessitate lighter loads because of the higher pressure from being short?
And in that case, wouldn't hot 40's do about the same thing?

Not to disparage Para. I have the hots for a 16-40 myself.
But for 10mm it's probably better to go with a gun designed for it.
I have an EAA Witness Elite Match (about $550 on gun broker). It functions flawlessly and is made for the 10mm.
If Para made a 10mm, I'd be all over it.

No additional mags needed. The Para 16-40 mags will accommodate the 10mm length round. Para 16-40s have been successfully converted to 10mm. Personally, I would not make the conversion using a Para as the platform, but that is a personal choice not because it was not designed for it.

[bdavis385]

Why not just have the barrel chamber made to 10MM, it is the same barrel just a different chamber dimension. Then spring to offset the power issue.

[Nfa86]

Originally Posted by bdavis385

Why not just have the barrel chamber made to 10MM, it is the same barrel just a different chamber dimension. Then spring to offset the power issue.

By far the easiest way.
I'm in the middle of it. My local gunsmith didn't want to ream my barrel so I bought a 6" and it's rough fit but not done yet.
I also bought a Egw oversized firing pin retainer. The square edge is supposed to slow the slide down.
Need to get that finished.

[davidalyn]

Originally Posted by bdavis385

Why not just have the barrel chamber made to 10MM, it is the same barrel just a different chamber dimension. Then spring to offset the power issue.

Yep, that will will work also, you just will not be able switch back and forth between 40 caliber and 10mm.

[tdifiglio]

Originally Posted by bdavis385

Why not just have the barrel chamber made to 10MM, it is the same barrel just a different chamber dimension. Then spring to offset the power issue.

This is what I would do, and It's cheaper than a new barrel, I think a 40/10mm finish reamer is about $70.00 and pretty easy to do yourself.

[icecold]

i too am planning in having one done,there is some info around on this and it seems that one thing that dosent work is if the host gun is a power extractor gun.
i know hunter customs used to do these and maybe still does???

other than that the factory mags are fine,and the cheapest route is to ream a factory barrel to 10mm of course then shooting 40 is out,i too prefer to pick up another barrel to have fit,then the egw square bottom firing pin retainer and a 20-22lb slide spring and you should be off to the races.

pete

[SSwanner]

why would the power extractor make a difference in converting to 10mm?

[icecold]

not really sure what difference the power extractor makes but both gunsmiths i talked to about the conversion said they would only do it to a non power extractor gun.
pete

[KITT]

Bob of Bob Hunter's Customs is the man to talk to...Reamed out my barrel and put in a 22lb recoil spring...best money I ever spent and shoots great!