N133 Load data help

[HuntClub]

Anyone here have Quickload or another program that can give load data? What I have loaded and tested is not available to check for FPS, energy, etc online. Here is what I have tested:

IWI Zion-15 (AR15 )/ 16.5" barrel / 1-8 twist

Bullet: 77gr Custom Comp
Powder: N133 - 21.8, 21.6, and 21.3 grains / COAL 2.2550

I have completed multiple tests @ 21.8 and keep getting similar results. This is the best combo I have found. I have tested RE15 and Varget as well.

Any help is greatly appreciated.

 

[SAWMAN]

If all you need to know is fps and energy that is easy to do WITHOUT any programs. --- SAWMAN

 

[HuntClub]

If all you need to know is fps and energy that is easy to do WITHOUT any programs. --- SAWMAN

Well, it might be easy if there was a point of reference to begin with. No one list N133 with a 77gr bullet. I did find a 69gr listing and have "guessTImated" that the FPS @ 21.8 is close to 2572. But it is a guess.

I don't have access to a chronograph. I don't have access (apart from a gun forum) to software that will more scientifically provide the best estimate to the info I am trying to gain.

If you have any information that will confirm my estimate it will be greatly appreciated.

 

[SAWMAN]

Does Vitavouri have any load data on line ?? ---- SAWMAN

 

[HuntClub]

Not for the 77gr

 

[RumbleWepnz]

Per Quickload:

21.8 is 2670 fps with slight overpressure
21.6 is 2599 fps safe pressure
21.3 is 2567 fps slightly lower pressure (approx. 58,000 psi)

 

[HuntClub]

Thank You! Now I feel much more comfortable about the load. None of the brass has shown any signs of over pressure in any of my testing. But I knew i had to be close to/at the limit.