M&P Pro 9mm 5" 1.0 rifling?

[gotigers]

What is the rifling for M&P Pro 9mm 5" 1.0 replacement barrel they sent out 10 years ago.

The original was one twist, i am thinking 1:10 and the new twist is 1:16. Am i remembering correctly?

 

[Beju]

Other way around, S&W went from a slower twist (1:18.5) to 1:10 which they're still using today on the 2.0 models.

 

[WR Moore]

Actually, the S&W twist for 9mm/.357/.38 was 1- 18.75 almost forever. Sometime in the M&P 1.0 semi production run they changed it to 1-10 because there was an internet belief that this increased accuracy.

Admittedly, 1-10 was pretty much the world standard. It's what's specified in the STANAG standardization document for NATO.

 

[hardluk1]

What is the rifling for M&P Pro 9mm 5" 1.0 replacement barrel they sent out 10 years ago.

The original was one twist, i am thinking 1:10 and the new twist is 1:16. Am i remembering correctly?

Are you pleased with how your pistol shoots not or does it shoot patterns like a 00 buck shot from a cylinder bore 12ga ? There is a fix for the later problem. Apex Tactical still has some Gun Smith Fit Barrels , treaded only but there well fit product can be done at home and turn your pistol into a 5 shot " 25 yard shooter.