G'Day Fella's,

Ducmarc, I'm not familiar with the 960 Rowland but I remember well, some of the local IPSC shooters, shooting what later became the "9x25 Dillon" (the 10mm Auto case, necked down to hold a 9mm bullet).

Iirc it was the 1994 IPSC Australian National, and these blokes from Sydney were loading and shooting these loads in their 1911's, with fully supported (5" or 6"?) barrels at 2000fps.
I can't remember the bullet weight (115 or 125grn?) but we were doing the chronoing of all the competitors loads at the match, and you knew when you cut one of these off!
BOOM BOOM SHAKE SHAKE THE RANGE!

Further to the .40 S&W cartridge.
What some people don't realise is, with 180grn bullets, the .40 S&W is only about 200fps behind the 10mm Auto, and about the same velocity as a 185grn bullet in a .45ACP.
There are individual variations with all three of these cartridges and their guns but generally, most data for the .40 S&W has been developed in a 4" barrel and with the 10mm and .45ACP, 5" barrels are generally used.

Regardless of which cartridge you choose or prefer, as Ripp/USMC Maj Nick Mannweiler quoted above, accuracy is still the most import consideration of all.

Doh!
Homer