[gtmtnbiker98]

I just noticed that the barrel on my M&P 40 full-size isn't crowned. After noticing this I quickly looked at my M&P9 and it isn't either. Why didn't S&W put a crown on these barrels? In my opinion, this leaves the rifling subject to damage should the end of the barrel get bumped.

 

[Jester]

Its called a rolled crown.



the grooves are set back far enough to keep damage from occuring.

 

[gtmtnbiker98]

Thanks for the reply, but I'm not sure about the "preventing damage." The 9mm isn't that bad but my .40's rifling is readily apparent from the business end and during cleaning, if I put my finger in the end, I can feel the rifling.



The accuracy on the weapon is fine and I'm sure the barrel is readily replaceable should it become an issue, but was curious as to other's opinion.



Thanks.

 

[coltman1985]

If you hit it hard enough to bugger up the rifling, then you will have invariably damaged the barrel regardless of crown style!

 

[raz-0]

Jester is right. If it bothers you that much get a different gun. But it'll be a purly psychological difference in performance.



FRankly, I can see the rifling form the muzzle end of the barrel on all my pistols except the one that is polygonally rifled and my .22.

 

[gtmtnbiker98]

Simply inquiring, no need to suggest another gun. I use my pistols for competition and need all the accuracy I can muster. As for the barrel end, sometimes the end of the muzzle can be bumped, especially during an IDPA or USPSA match for which I am going to try to transition from Glock to the M&P. That was the basis for the inquiry, could care less about aesthetics, as long as the gun goes bang and is accurate.

 

[raz-0]

It should be a non issue regarding knocking the barrel into objects. I have a 1911 with a crowned bull barrel, and banged that into something hard enough to get a nick on it. Missed the crown, but the traditional angled crown it has would not have helped one bit.



A rolled crown won't have more or less issues than other types of crowns, Hasn't caused issues on my M&P for the last year of USPSA competition with it.

 

[gtmtnbiker98]

raz-o,



What model M&P are you using for USPSA? I'm primarily an IDPA shooter - currently using a G17. I'm wanting to transition to an M&P9 since .40 S&W will not gain me anything shooting in SSP division. Just curious, have you had any issues and if so, what should I look out for?

 

[Fallschirmjäger]

I just compared my .40 M&P against one of the GLOCK's..... almost the same, but the S&W has just a bit More of a bevel on the end than the GlOCK does.

 

[jkushner11]

Crown

If your thinking about USPSA, you should be focused on shooting skills not bumping the gun. I have found after shooting both disciplines extensively, that USPSA brings you into a different universe of shooting, I was king of the hill for a little while in IDPA, then transitioned to USPSA, where I am an also ran, and I am twice as fast and accurate as I used to be. You wont damage your crown dry firing, which I recommend alot of.

Mainly humor, but the skill commentary is all fact, they just play the game at higher level in USPSA, may not be as tactically correct, but if your shooting at club with even a half commitment to serious USPSA, you'll see what I mean, Dan is building me an M&P now, can't say I'll ever jump from my beloved CZ, but cant wait to get my Dan&P full size 9 and play with it, that Canyon Creek XD, that I cant shoot to save my life.

Jon

 

[raz-0]

raz-o,



What model M&P are you using for USPSA? I'm primarily an IDPA shooter - currently using a G17. I'm wanting to transition to an M&P9 since .40 S&W will not gain me anything shooting in SSP division. Just curious, have you had any issues and if so, what should I look out for?

I have been using the M&P40. Only issue I had that was not me was the ammo (one bad round of remingont UMP or whatever the green box is). I'm at about 6000 rounds give or take some. Out of the box I borke a striker while dry firing before ever shooting a live round, but it was a LOT of dry firing, and I have not had any issue with the replacement.



In the things to watch out for category, definitely degrease the mags before use. Whatever is on them to protect them is a dirt and sand magnet. Additionally, the legs on the follower can hang on the first witness hole on the mag if they develop a burr (and they will, at least in .40). So I radiused them after that happened.



Personal preference, I didn't like the dots or convoluted surface gemoetry of the rear sight.