Actually, that 10-5 has a 'standard' 3-inch barrel
If you look closely, you can see the rib is fairly narrow and slightly tapered toward the muzzle (as is the barrel itself).
That is the 'standard' profile for a 3-inch M&P barrel; the taper is slight, and straight, but the barrel is actually fairly 'light'.
![[image]](http://oi44.tinypic.com/2qdd92a.jpg)
In contrast, the 'heavy' barrel seen on Model 65s, etc. has virtually no taper, and the rib is almost full width (and likewise un-tapered).
Similar 3-inch 'bull' barrels also appear on later Model 10s than the 'dash 5'.
HTH 
--
![[image]](http://www.sixshootercommunity.com/share/awkward.gif)
Complete thread:
- Took an old friend out shooting this morning... -
Glen,
2013-08-08, 16:08
![[*]](themes/default/images/complete_thread.png "Open whole thread")
- Took an old friend out shooting this morning... -
Slow Hand,
2013-08-08, 16:39
- I picked up one of the 3" Aussies. -
Wildcat,
2013-08-08, 16:45
- Those are just the classic revolver in my book - stonewalrus, 2013-08-08, 16:58
- There were some 3" K-frames from a South American contract -
Otony,
2013-08-08, 17:04
- There were some 3" K-frames from a South American contract -
Wildcat,
2013-08-08, 17:10
- There were some 3" K-frames from a South American contract -
Slow Hand,
2013-08-08, 20:17
- Actually, that 10-5 has a 'standard' 3-inch barrel -
FOG,
2013-08-09, 08:25
- Actually, that 10-5 has a 'standard' 3-inch barrel - Slow Hand, 2013-08-09, 09:18
- Actually, that 10-5 has a 'standard' 3-inch barrel -
FOG,
2013-08-09, 08:25
- There were some 3" K-frames from a South American contract -
Slow Hand,
2013-08-08, 20:17
- There were some 3" K-frames from a South American contract -
Wildcat,
2013-08-08, 17:10
- I'd like to find one of those! (nm) - Boge Quinn, 2013-08-09, 08:42
- I picked up one of the 3" Aussies. -
Wildcat,
2013-08-08, 16:45
- Took an old friend out shooting this morning... - stonecoldrc, 2013-08-08, 19:11
- Took an old friend out shooting this morning... -
Slow Hand,
2013-08-08, 16:39