Revamping my Load Testing Approach

[ET]

Okay with the way I approached powder burn testing I learned what I needed to know for now.
It’s time to move onto load testing to find optimum loads for 250 bullets using 4227. Now here comes the fun part as I have to identify what PT readings, I believe will make an optimum load. With no guide lines to follow I will have to make my own that I feel are best suited.

Okay here’s my choice for PT readings.
Rise Time—80 to 100
Peak Pressure—around 35K
Burnout—to occur as close as possible to bullet exit point but not exceed 5K
Now I can alter the pressure curve to a certain point but may not be able to produce all 3 values together into the parameters I have assigned. So, I’ll take what I can get.

This first stage load testing is not about producing high velocity but good workable loads. Once I’m satisfied with a certain number of developed loads and gain more experience then I will take a closer look at possible loads with higher velocities. More than likely it will involve duplex loads but with a different powder ratio than what is normally used. I won’t discuss my reasoning until I have more data to confirm it.

For 2020 the die is cast and hopefully soon time to roll the dice.

Ed

[jims]

Waiting to see the dice results.

[ET]

Mar 17, 2020 8:01:08 GMT -5 jims said:

Waiting to see the dice results.

The dice are in my hands ready to roll but needs ambient temp of 55F to ensure no hick-ups with my laptop.
As I gain more knowledge of what's happening I should be able to adjust my loading through a range of different temps.