Put a 625-9 .45 Colt Mountain Gun on layaway today.
I've got some 250 & 240 grain Keith type LSWC & Unique. Anyone got a favorite recipe for this pistol?
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October 5, 2012, 06:29 AM
I used to shoot 8.5 gr of Unique with a 255 gr LSWC out of mine. Ended up selling mine after 2 years, I hope yours shows better accuracy.
October 5, 2012, 12:21 PM
8.5 to 9.0 grains Unique with either bullet has been the standard .45 Colt load for longer then I am old.
October 5, 2012, 12:26 PM
Usually 9.0gr Unique, like a broken record. ;)
October 5, 2012, 01:45 PM
Like CraigC, I'm partial to 9.0gr of Unique.
November 8, 2012, 09:59 AM
Yep. Since I picked it up, I've put a bunch of Unique through it 9.0 grains at a time. It's a fun load for a day of shooting. Really sweet through the mountain gun.
November 8, 2012, 12:42 PM
5.5gr of Solo-1000 under a 250gr LSWC for a nice light plinking load.
November 8, 2012, 06:17 PM
Back when I started Law Dawging, I carried a M-25-5 4 inch (45 Colt) for the first few years.
I used to use 10.3 grains of Unique, a mag primer and the old Speer 200 grain jacketed hollow points. The ones they used to call the Flying Ash-tray. It worked well in the 4 inch barrel. I had to shoot several large rabid dogs during one winter in a bush village.
That round was much more effective than the factory silver-tip loads. I carried it for 3 years or so until a District Attorney had a cow ...
November 8, 2012, 09:41 PM
I have shot hundreds, if not thousands of pounds of 250 LRN, LSWC with 8.5 grains Unique. That usually gave me about 850 to 900 fps depending on the conditions.
Now I have turned into an old futz and am shooting 8.0 grains Unique and that chronographs exactly at 800 fps. Back in 1993 I purchased a lot of Unique powder, and most of my data reflects that older version. I did go out and shoot the new stuff and it appears to be faster. I would start with 7.5 grains and work my way up with that stuff.
I am frustrated with the inconsistency I get with Accurate Arms powders. I developed a load in a SAA with 10.5. grs AA#5 and it shot great and was about 825-850 fps. Well, with this different lot of AA#5, 10.5 grs is faster than I want. I don’t want 875 fps, so I am going to retest, and I expect 9.5 grs will give me what I want.
AA#5 is a ball powder, shoots “cleaner” than Unique, though that does not make the slightest difference on paper or in clean up time.
I though might be of interest is the Wolf primer data. Looks to be a mild primer.
My loads are accurate enough to hit my 12 gong target each shot, standing, shooting one handed, at 50 yards. I don’t always hit each shot. I am very happy if I hit 5/6. The distance is within the range limitations of where I shoot.
The 2400 load is the most powerful I have shot in my 45LC, accurate, powerful, uncomfortable. I don't recommend high doses of it, and I guess this would be the most powerful load you could shoot in the N frame.
M625-9 Mountain Gun 4" Barrel
250 JHP 8.5 grs Unique thrown, W-W cases, WLP primers
18-Mar-07 T = 55 °F V, accurate
Ave Vel = 830
Std Dev = 30
Number Shots= 12
250 Nosler JHP 17.5 grs 2400 thrown, Master cases, Fed150 primers
18-Mar-07 T = 55 °F V, accurate uncomfortable recoil
Ave Vel = 971
Std Dev = 25
Number Shots= 11
255 LSWC (.452") 8.0 grs Unique thrown, lot 6/21/1993Starline cases, WLP primers
25-Mar-07 T = 80 °F accurate
Ave Vel = 800
Std Dev = 30
Number Shots 11
250 LRN (.452") Valiant 8.0 grs Unique lot 6/21/1993 thrown, R-P cases, WLP primers
25-Mar 07 T = 80°F accurate
Ave Vel = 814
Std Dev = 24
Number Shots 11