9x25Dillon

[The_Shadow]

What is the 9x25Dillon?
http://en.wikipedia.org/wiki/9x25_Dillon#column-one#column-one



10mm........9x25Dillon........40S&W........357Sig

Lyman Pistol and Revolver reloading Handbook second edition info for the 9X25Dillon

[The_Shadow]

Well I took apart some of my Double Tap 9X25 Dillon cartridges today for a look see...
Powder used by Double Tap is LongShot

9X25 Dillon DT performance                  August 6th 2008
Bar-Sto Match Grade 5" Barrel test from S&W 1006, the 5" Barrel is too short to achieve the higher velocities.
DT 90gr Speer Gold Dot Hollow Point
Box 2100 fps/6” bbl
C.O.A.L. 1.250”
Powder Charge Weight 12.2 grains LongShot
1940 – 1855 fps from Bar-Sto Barrel from S&W 1006

DT 115 gr Speer Gold Dot Hollow Point
Box 1800 fps/6” bbl
C.O.A.L. 1.250”
Powder Charge Weight 10.6 grains LongShot
1575 – 1610 fps Bar-Sto Barrel from S&W 1006

DT 125 gr Speer Gold Dot Hollow Point
Box 1695 fps/6” bbl
C.O.A.L. 1.250”
Powder Charge Weight 10.0 grains LongShot
1525 – 1475 fps Bar-Sto Barrel from S&W 1006

[Vice]

Do you shoot one?

If so, is it compensated?

Man what a screamer.

[Breadman03]

Do you shoot one?

If so, is it compensated?

Man what a screamer.

Seriously!  That is scraping rifle velocity!

[The_Shadow]

BTW there is more to the post that I could not get to copy over, working with Grim Reaper to get things ironed out.
Yes, I shoot from the S&W 1006 with a BAR-STO match grade 5" barrel and the Glock 29 3.78" both non compensated barrels.
DT 90gr Speer Gold Dot Hollow Point
Box 2100 fps/6” bbl
C.O.A.L. 1.250”
Powder Charge Weight 12.2 grains LongShot
1940 – 1855 fps from Bar-Sto Barrel from S&W 1006

DT 115 gr Speer Gold Dot Hollow Point
Box 1800 fps/6” bbl
C.O.A.L. 1.250”
Powder Charge Weight 10.6 grains LongShot
1575 – 1610 fps Bar-Sto Barrel from S&W 1006

DT 125 gr Speer Gold Dot Hollow Point
Box 1695 fps/6” bbl
C.O.A.L. 1.250”
Powder Charge Weight 10.0 grains LongShot
1525 – 1475 fps Bar-Sto Barrel from S&W 1006

[The_Shadow]

History of my 9x25 project...The 9X25 Dillon conversion project started back April 17th 2008 with the purchase of a Bar-Sto Match Grade barrel for my S&W1006 from Mike McNett of Double Tap.  The barrel arrived April 21st, 2008 and inspection showed it needed to be fitted to the slide and frame of the S&W1006 before anything else.  I took my time carefully getting the fit correct to get proper lock up while in full battery now it is June.  I searched around looking for a Gunsmith who could do the final chamber reaming and was contacted by a very nice gentleman from The Gun Works in Ohio, from one of the forums who said he has the reamer and has done quite a few.  He advised he could do the job, so mailed out on July 24th, 2008.  I received the properly reamed and head spaced barrel back August 5th and was shooting it for the first time August 6th, 2008 with some of the rounds I purchased from Double Tap.

[475/480]

I spoke to STI last week to see if they would fit a 9x25 barrel to my STI Perfect 10, the man in the shop said they used to but have not done one since the custom shop was closed (last year) but I should call back in a couple months when the Custom shop is re-opened.

Sean

[sqlbullet]

Just ask them to fit a 9mm or 38 super barrel.  Then ship it off to Ohio to be reamed.

[The_Shadow]

The 9x25 Dillon performance begs for the longer barrels, 6" + barrels are better than the shorter ones I am currently working with.  I have a 6" 9x25 custom barrel scheduled to be made for my S&W1006, however that has stalled becuse the machinist lacking access to CNC machines due to current production runs.

There maybe a Glock 20 (4th Gen) in my future and may go "Hog Wild" with that setup.  May build it with the LWD long slide, barrel is 6.61 inch length (or custom barrel) and the compensator...   Time and the most important part "$ Money $" will tell!

[REDLINE]

The 9x25 Dillon performance begs for the longer barrels, 6" + barrels are better than the shorter ones I am currently working with.

Makes sense.  I'ld think something like a custom Bar-Sto of around 7.5" would be really slick for the 9x25 Demon...I mean Dillon.

[The_Shadow]

When I first considered getting into the 9x25Dillon I didn't find much data except for what was on the Glocktalk site in the 10mm handload section.  Then I started to communicate with a nice fellow on one of the forms, he had mentioned about some stuff about the cartridge that was said to be the notes of the people at Dillon (Jay Phillips,Randy Shelly, Arnt-Magne Myhre)?

Long story short this nice fellow sent me copies of the data to help with my study of the 9x25Dillon.  Many of the notes were not clear as exactly what cartridge was being tested although it was suppose to be 9x25's.  However being a Blue Dot fan I decised to start with it because I was most familure with Blue Dot.

Earlier this month (7/2012) I snagged a copy of Lyman's "Pistol & Revolver Reloading Handbook" second edition from "Evil Bay" because it had an article about the 9x25Dillon specificly and also some limited loading data, that I already had obtained from another nice person.  These loads were developed around guns using comp'ed barrels using slower burn rate powder to generate large volumes of gases to make the comps work.

I'll try and post some scans of the info...

[The_Shadow]

I Updated the first post with some scans from the Lyman book.
Hope people find them useful.

[REDLINE]

How come I'm not seeing 147gr load data above?  Maybe I'm blind.  Just seems like the 147s would really shine at maybe +1200fps.  Especially the XTP having the boat tail base. 

[sqlbullet]

At a guess...

The cartridge was originally designed to make major for IPSC in 9mm and drive compensated guns.  For those purposes a lighter bullet has many advantages and no disadvantage over a heavy one.  In speed shooting lighter bullets are just better.  That is why they came up with the power factor thing to begin with, to compensate for guys running lighter and lighter bullets and loads.

The cartridge never really took off, even in IPSC.  The result is that there is very little load data and what their is was targeted at the original audience.

[The_Shadow]

The 147's can be used however they occupy internal space and displace the amount of powder.  The 10mm can probably push the 155's and for sure the 135's faster.  There are trade offs, and yes many of the guys are still working with various loads and powders developing loads.  The 357Sig cartridge helps here some as a place to start with some powders.