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What is your 40 major load data for a 6" pistol


RangerTrace

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After I squeaked by the chronograph at the Space City Challenge with a 167PF, I started taking my load a little more seriously and bought a chronograph. My load at SC was 180 grain Zero JHP over 5.1 grains of N320 loaded to 1.20. After buying a chronograph and trying 5.2 and 5.3 grains of N320 it appears I'm going to need 5.4 grains to average 950+ FPS. My 6" pistol has an AET barrel.

So, if you don't mind, if you have a 6" pistol, please list your load and if you use N320, that's even better :cheers:

And yes I searched, and searched.....

Edited by SV-COP
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Try shortening it up a bit to 1.190 or 1.195. I am showing that I was at

5.0 gr N320 at 1.20 for avg 939. I shortened it up a little, and that pushed the pressure enough to averave 960fps. 180gr zero. Doing the load development side by side with a 5", the longer barrell lagged behind until the pressure got high enough(more powder or shorter aol), then it pulled away from the 5".

Randy

Edited by h2osport
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Data for my 6" Briley. Mixed Cases.

180 Grain LTC - Bear Creek

DATE POWDER CHARGE TEMP COAL PRIMER AVGVEL PF NOTES

1/16/09 S1000 4.3 70 1.17 WLF SP 936.7 168.6 5 shot.

200 Grain FMJ - Precision Delta

DATE POWDER CHARGE TEMP COAL PRIMER AVGVEL PF NOTES

7/16/09 S1000 4.3 90+ 1.17 FSP 847.0 169.4 5 shot.

2/25/08 TG 4.0 ? 1.18 FSR 864.9 173.0 5 Shots.

200 Grain LTC - Bear Creek

DATE POWDER CHARGE TEMP COAL PRIMER AVGVEL PF NOTES

1/16/09 S1000 4.3 70 1.17 FSP 929.3 185.9 5 shot.

7/16/09 S1000 4.3 90+ 1.17 FSP 890.5 178.1 5 shot.

7/16/09 S1000 4.3 90+ 1.17 WOLF SP 917.0 183.4 5 shot.

(Calculated: 4.0 grains for 172 PF)

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We did some testing yesterday and got some interesting results that may indicate a significant pressure spike somewhere around 4.3-4.4 grains.

We shot two different 6" guns. A new Bedell with an aet barrel and a Benny hill with a scheumann classic barrel. Both were shooting 180 grain bayou bullets. Both had generally the same velocities with ammo loaded to the same specs from two different loaders.

4.0 - 165pf

4.2- 167pf

4.4- 176pf

The velocity jump between 4.2 gr and 4.4 gr is much greater than any other .2 gr jump leading up to that particular load.

I always shoot for 171-172pf and I just cant seem to get it with n320 and the 180 bayou bullets. The 176pf load doesn't feel significantly different from the 167 load, so I'm not going to fiddle with it.

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  • 2 weeks later...
  • 4 months later...

I shot Ga state match around 70deg on my limcat 6 wildcat KKM barrel. i put 5.1gr of N320 behind 180gr FMJ Montana Gold, mixed brass, 1.195 OAL, Winchster rifle primer and my PF that day is 170.5. A month later i shoot NC in a chilly 50deg. I barely made PF at 165.5. I think i have a slow barrel. This winter i will bump my load Vihta Vouri N320 load to 5.2gr. I think 5.2gr is my sweet spot. I need to develop an alternate load for titegroup though since VVN320 is sometimes hard to find and getting really expensive.

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  • 3 weeks later...

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