Jump to content
Ehunt

9mm barrel twist

Recommended Posts

I've been looking at aftermarket barrels for a S&W M&P 9c (1.0 version with a 3.5" barrel), that I recently bought. Some barrels are a 1:10 twist, but I noticed that Storm Lake offers their barrel with a 1:16 twist. Can anyone tell me why a slower twist might be preferred to the 1:10 twist in the shorter barrel? Thanks in advance.

Edited by Ehunt

Share this post


Link to post
Share on other sites

The 1:16 might generally be preferred for a bigger heavier bullet. Use whatever the barrel manufacturer recommends for the bullet you are going to use.

If I’m not mistaken S&W uses 1:16 for the .40S&W and 1:10 for the 9MM, I think the 9MM use to be 1:18 and they changed it.

If Storm Lake and Smith & Wesson disagree on which twist is more accurate on a Smith & Wesson; you have a decision to make. :)

My opinion is that my M&P 40C is a belly gun and I wouldn’t be able to tell the difference. But that opinion is worth exactly what you paid for it.

  • Like 1

Share this post


Link to post
Share on other sites

1/16 is a typical 22LR rifling twist-at least it is what my CMMG Sierra upper uses.Seems 45ACP also uses that twist-9MM is using 1/10 more universally.

Kinda weird that they use the same twist for real light bullets and very heavy bullets.

  • Like 1

Share this post


Link to post
Share on other sites

apex custom barrel is 1:10  S&W 1.0 = 1:9

 

Edited by chances R
  • Like 1

Share this post


Link to post
Share on other sites

Thanks everyone. I shoot 115 &124 grain 9mm, so I think a 1:10 twist would be fine. I just couldn't figure why a 1:16 twist would be made. I appreciate the input.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Similar Content

    • By Pickaroon
      I’m considering one. But, they seem to be scarce in the Nashville area. Are you happy with yours?
    • By Noseknot
      I'm 18 and a new gun owner. As of now I have a pretty basic collection. One AR, one 870, a few .22s, the works. However, the obvious hurdle to owning a handgun is the federal restriction on purchasing a handgun from a licensed firearms dealer when you're under the age of 21. Buying a handgun from a private seller, however, is totally legal.
       Sadly, that limits my options dramatically. I can't have a gun from a listing shipped to me since that would require an ffl transfer, so I am limited to sellers in my area. Even then, most of the listings I've seen in my area explicitly demand a HCP, which, being under 21, I can not obtain. 
       I'm aware for many people this is to protect themselves in the event the buyer is a criminal, but this comes off as really hostile to any 18-20 year olds who want to exercise their gun rights. If I can buy an AR easily I fail to see why it should be so difficult for me.
    • By tngunowner1
      Hi all,
      I just got into handguns after moving away from a state that made them impossible to get.
      Are there any tips and tricks to get less expensive 9mm ammo for target practice purposes? I currently get them at Academy and its about .175 per shot. At the range I typically go through 150-200 rounds which starts to get pricey!
      Thanks in advance for the advice.
       

The Fine Print

Tennessee Gun Owners (TNGunOwners.com) is the premier Community and Discussion Forum for gun owners, firearm enthusiasts, sportsmen and Second Amendment proponents in the state of Tennessee and surrounding region.

TNGunOwners.com (TGO) is a presentation of Enthusiast Productions. The TGO state flag logo and the TGO tri-hole "icon" logo are trademarks of Tennessee Gun Owners. The TGO logos and all content presented on this site may not be reproduced in any form without express written permission. The opinions expressed on TGO are those of their authors and do not necessarily reflect those of the site's owners or staff.

Before engaging in any transaction of goods or services on TGO, all parties involved must know and follow the local, state and Federal laws regarding those transactions. TGO makes no claims, guarantees or assurances regarding any such transactions.

×
×
  • Create New...

Important Information

By using this site, you agree to the following.
Terms of Use | Privacy Policy | Guidelines