The Rohrbaugh Forum

Rohrbaugh Products and Accessories => Rohrbaugh R9 (all variations) => Topic started by: Rich3006 on August 17, 2010, 12:01:51 AM

Title: Rohrbaugh R9 9MM Performance Compared to .380 ACP
Post by: Rich3006 on August 17, 2010, 12:01:51 AM

Has anybody chronographed 9MM loads out of thier R9?  I am curious how much veloicty and energy is lost out of a 9MM round due to the short barrel of the R9?  Does the R9 lose so much velocity and energy due to its short barrel that it basiclly becomes a .380 ACP?  If anybody has chronographed 9MM loads out of your R9, could you please post your results?  I have a Ruger LCP, but am seriously looking to step up to a R9.  I would hate to spend the bucks for a Rohrbaugh R9 and find out after the fact that performance wise it really is not that much different from my current .380 ACP.

Thanks........Rich

Title: Re: Rohrbaugh R9 9MM Performance Compared to .380
Post by: yankee2500 on August 17, 2010, 01:13:35 AM

Rich,
   First Welcome to the group.
If your asking if the short barrel 9mm is at 380acp standards, your LCP with it's short barrel is like a 32acp, and a short barrel 32acp is like a 25acp. :o
 When you compare a short barrel 9mm to a short barrel 380acp the R9 has more power than your LCP. Now if you were asking if the R9 has as much power as a 9mm 1911 with a 5" barrel the answer would be NO.
  I have a chronograph but have never fired the R9 over it.

John

Title: Re: Rohrbaugh R9 9MM Performance Compared to .380
Post by: kjtrains on August 17, 2010, 09:57:03 AM

Rich.  Welcome to the Forum.  Here is an article by Tim Slemp on the Pocket Wonder - Rohrbaugh R9 Stealth.  Chronograph results are at the bottom of the article; also other good info in the article.

http://pistol-training.com/articles/pocket-wonder-rohrbaugh-r9s-stealth

Title: Re: Rohrbaugh R9 9MM Performance Compared to .380
Post by: jhs27275 on August 17, 2010, 11:36:52 AM

Interesting article.

Title: Re: Rohrbaugh R9 9MM Performance Compared to .380
Post by: Brenden on August 17, 2010, 01:09:28 PM

Quote

Interesting article.

I have read this earlier,and it goes to show you that the proper ammo used makes a difference in feeding and accuracy..

My carry pups group nicely with any of my chosen 115 grain fodder!! 8)

Title: Re: Rohrbaugh R9 9MM Performance Compared to .380
Post by: Nra-Life-Member on August 22, 2010, 01:35:47 AM

Thanks for the article link.

Title: Re: Rohrbaugh R9 9MM Performance Compared to .380
Post by: Hayabusa on August 22, 2010, 11:07:51 AM

Kjtrains, thank you for the article.  Cool read.

Wish it had been written with an array of this forum memberships proven and favorite ammo.  That would have been fantastico!

Title: Re: Rohrbaugh R9 9MM Performance Compared to .380
Post by: kjtrains on August 24, 2010, 03:08:05 PM

I'm surprised the preferred ammo for the R9 wasn't included in the article, however, it does give some idea.  

Title: Re: Rohrbaugh R9 9MM Performance Compared to .380
Post by: spursguy10 on December 08, 2010, 04:22:08 PM

I would be interested in this too! I know it will preform superior to a typical .380, but by how much? Also, I would be interested in the comparison vs a jframe .38+p.

Nothing currently on the market will replace my r9, but I am still curious!

Go Spurs!

Title: Re: Rohrbaugh R9 9MM Performance Compared to .380
Post by: kcub on December 09, 2010, 05:04:18 AM

The Evan Marshall data can be seen here to compare.  It is dated but then so is some of the recommended loads such as the silvertip.

.380
http://handloads.com/misc/stoppingpower.asp?Caliber=10&Weight=All

9mm std pressure
http://handloads.com/misc/stoppingpower.asp?Caliber=15&Weight=All

.38 spl +P (note the barrel length column)
http://handloads.com/misc/stoppingpower.asp?Caliber=8&Weight=All

Title: Re: Rohrbaugh R9 9MM Performance Compared to .380
Post by: Alphonso on December 09, 2010, 10:21:34 AM

The article is interesting and well written, but it is as much about Blazer Brass being crappy ammo as it a review of the R9.  

It's sort of pointless to me as no one is likely to carry Blazer as a defensive round anyway.  YMMV...