9x25mm Dillon

Historical Notes:

Final design of the 9x25mm Dillon was completed in 1988 but the cartridge languished until top IPSC competitor Rob Latham began testing in 1991. This cartridge was developed by a group of people at Dillon, but was chiefly Randy Shelly's concept and he is primarily responsible for the design. Randy's intention was to create a 9mm cartridge that would function through standard pistols and still produce major IPSC Power Factor without requiring excessive pressures. In an effort to achieve major Power Factor ratings with light bullets, which reduce recoil, many IPSC competitors have routinely used 38 Super loads generating rifle type peak pressures! The 9x25mm is based on the 10mm Auto case necked to 9mm and with its increased capacity it allows loads to achieve Major Power with more reasonable envelopes.

General Comments:

The 9x25mm Dillon is formed by necking the 10mm Auto case to 9mm with a sharp shoulder and short neck. This creates a relatively high capacity pistol cartridge which is based on a high pressure case. With the proper bullet and powder the 9x25mm Dillon can generate significant muzzle energy and it easily achieves IPSC Major Power momentum levels. Vihtavouri has recently designed a powder (tentatively called N105) specifically for this and similar cartridges. Hodgdon will soon announce a similar new powder in their extensive product line. Appropriate 9mm bullets are readily available. The future is bright for this cartridge, which might very well achieve commercialization very soon. Springfield Armory offers guns in this chambering and several custom barrel makers chamber their tubes for this round. Representing an increasingly unique example of the breed, the 9x25mm Dillon meets a recognized need.

Source: Cartridges of the World

Back to Wildcat Cartridges

© www.reloadbench.com 1999 - 2012 All Rights Reserved