RMR 124 Gr TrFP Match Winner

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I ended up loading the TrFP at 1.070 to 1.075 (Although most were 1.073 to 1.075) OAL, just like I did the MPR in Load #116 with 5.5 Grs of Silhouette, so it is .005 less deep in the case with a hair less bearing surface. Seems to be a very hard bullet though, may make it tougher to move?

I loaded 25 with 5.3 Grs of Silhouette and 25 with 3.9 Grs of Sport Pistol. I used a batch of 50 test brass. Blazer, 60.24 to 61.02 Grs (No primer), .746 to .751 long (Sized) (with most at .747/.748). I used CI 500 primers.

If work will leave me alone long enough (Been in twice already), I'll go shoot them. I plan to shot them over the chrono on target with a 3" P-365, a 4.5" XDm OSP, and a 5" Colt 1911 (.38 Super with a 9MM barrel).
I shot both loads this AM. I posted the Sport Pistol load in the Sport Pistol and 9MM thread.

I took two pictures of each group on my cell phone, but somehow or another lost the pics of groups one and two of the Silhouette load with the P-365 and XDm OSP. I shot one group each with the 3" P-365, a 4.5" XDm OSP, and a 5" Colt 1911. (I don't have a 4" 9MM)

I shot a poor group with the P-365, a nice round group with the XDm, and an OK group with the 1911.

Colt 1911
RMR TrFP MW Loads #121 Pic 3 (Lost 1 & 2).jpg

Load # 121 84 Degrees 66% RH
3" P-36
Hi=1009
Lo=984
Avg=998
ES=25
SD=9

4.5" XDm OSP
Hi=1130
Lo=1103
Avg=1121
ES=27
SD=8

5" Colt 1911
Hi=1156
Lo=1143
Avg=1150
ES=13
SD=4

This load shot well, but not great, may try 5.4 Grs, but it was mostly me. I probably just need to try it again. I am also going to try this bullet with N340. Overall the bullet shoots very well. Shot better groups with the light load of Sport Pistol.
 
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I also shot 8 rounds of factory 124 Gr HST non +P in the P-365.

Factory 124 Gr HST Non +P 86 Degrees 59% RH
3" P-365
Hi=1101
Lo=1055
Avg=1077
ES=46
SD=14.

Faster than the 5.3 Grs of Silhouette
 
Haven't loaded any yet, but I settled on a shell O/L of 1.085. Got a few hundred hulls primed and will probably load some tomorrow.

Have a blessed day,

Leon
 
Best post I've seen in a while. Believe it or not, until recentely, SAAMI had a range for leade. It has since removed the range and went with it's minimum spec only. This explains why the last year or so all of the new models and guns have had the short leade. SAAMI really should have gone with the longer leade. It doesn't hurt anything and offers ammo and bullet makers a ton more options.
Lately it seems, even factory barrels are being made with shorter or short leade.

My Sig 1911 has virtually no leade and requires significantly shorter max OAL than other 1911 barrels.

BTW, working OALs used for various RMR 124 gr jacketed bullets are for my newest Lone Wolf barrel with shorter leade.

Sig 1911 barrel with essentially no leade
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My newest Lone Wolf barrel with short leade
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KKM barrel showing freebore/leade
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And Gen3 Glock barrel with longer leade
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