.45ACP magic load ?

by Jambat 8/9/2020, 12:48 am

First topic message reminder :

I'm developing a load based on Brazos 180 gr SWC bullets, N310 and Winchester WLP.
I want to use it on both long and short lines.

I shot 20-30 rounds groups on 25 yds targets from a sandbag. My pistol is a 1911 with a 5" Bar-Sto match target barrel 1 in 16" twist.
I covered a range from 3.6 to 4.4 gr N310. I loaded 50 or 100 rounds series, and measured the initial, final and halfway through masses, pretty consistent.

My chronograph collected some unexpected data.
Here is the graph :
   Blue= Avg
   Red= StdDev
   Green= Spread

Here is the raw data :

What do you think about what is going on between 3.7 and 3.8 grains? Is 3.7 gr a "magic load" for my pistol with an optimum yield from the amount of powder?

by LenV 2/8/2021, 11:15 pm

DA/SA wrote:
LenV wrote:I didn't sort my brass, measure each shot of powder, sort any bullets or do anything except crank the handle and feed it bullets. Once again showing that all of that is not very important to get decent groups at 25yds.
But, did you clean the primer pockets, wet tumble, or dry tumble?

No, I never clean the primer pockets in pistol brass. Labor intensive with no apparent gain. It can even cause problems with an exposed primer hole. I sonic clean then dry tumble.

.45ACP magic load ?

.45ACP magic load ?

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