[Dan]

I just loaded a test batch 135 MW 1.090 OAL. 3.7 Sport Pistol. 938.3 avg. vel. 126.6 pf. Used M&P 5″ Pro for chrono. Ran the gun perfect accuracy great. I did have a hiccup with my Springfield RO. Not the fault of the bullet. recoil spring little on heavy for the light load. Past records show I have been loading that wt. bullet 3.9 gr Sport Pistol, 3.7 Tite Group. 1.09 AOL. will function in All my shooting toys. My “go to” IDPA charge for that weight bullet. (132ish. pf.)

Dan Glica

[Dan]

The 124 gr Match Winner is a great bullet. Yes they can be an issue with some weapons. Every gun is different. You must find the right seating depth for gun. We all heard that a million times! One of the things I tried, and was successful, after I found the PERFICT OAL, was to switch to a
Lee Carbide taper crimp die. It will iron out any bulges, or out of roundness or distortions in the brass. It actually burnishes the brass to a nice shine. It also makes a perfect crimp, and is very fine adjustable. I now use a Lee seat die on ALL my .45acp loads also.
Sometimes with the profile of the MW running up the feed ramp, it is possible to feel a slight bump. Also when that happens, if you measure the OAL, you may find a slight set back. This may slow the final chambering process, cause an insufficient lock up or even misfire.
I compared 124 Match winners vs 124 RMR FMJs, many times. I use my most accurate competition gun with a Leopold Red dot on sand bags. I find NO difference in accuracy. Over the Chronograph I do find the MWs slightly more consistent, but at normal shooting distance ( 3-25yds) no effect on group size.
On defense of the MWs, they make cleaner holes it cardboard and paper targets. With my 72 year old eyes, that is a big deal shooting IDPA competition. I am slow, and I suck, I can use every edge I can get.

[Dan]

I only use FLAT Point seating plugs for flat points , and ROUND NOSE seating plugs for round nose bullets. This gives the best OAL consistency .
When establishing over all length ( OAL) I always do the “Plunk”test to find the Max OAL for the attended firearm, than go from there. The round my pass the plunk, but still need final adjustment to run consistently. RN and Flat points bullets will differ in OAL. Every weapon is different. It is possible to find the “sweet” length to satisfy MOST of your guns of the same caliber.

Campcook

[Dan]

The “plunk test” is a good idea to find your OAL. After that I sample test as I’m loading. I had great results with W231. 4.2grs was averaging 1065fps in my M&P 5″ Pro, slightly higher in my Walther PPQ 5″ Match, slightly lower in my 1911 5″ Springfield RO. Sport Pistol is my GO TO powder but became very scarce for a year or two. I also had some very good results with “Titegroup”.
W231 4.2grs., Sport Pistol 4.1, Titegroup 4.0 . All should put you in 132 Power factor range ideal for competitive sport shooting.
Oh yeah, my “sweet length” to run all my 9s with this 124 TC MW is 1.09 – .005 . Great Bullet! Makes nice holes in IDPA targets.

Campcook
Unityville PA

[Dan]

4.2 gr. Sport Pistol CCI 500, 1.135 COAL

1070 fps avg. Walther PPQ 5M, M&P Pro 5″
1080 Springfield 1911 RO (5″bbl)
1060 M&P CORE 4.25 bbl
1040 M&P 4″ compact, CZ 75 compact 3.7bbl
All the above velocities meet the 125 min power factor for IDPA and USPSA . They also feed and run flawless and are extremely accurate.

[Author]

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