Thread: Who says ADI max loads are soft

Originally Posted by Wildman

Still over 72,000psi... 10,000 more than spec max.

It is also worth noting that your 69gr SMK at spec OAL and 25.5gr 2206H comes out over pressure (~72,000psi)

Interestingly I just checked out the online ADI data and for 2206H they suggest a max of 26gr for the 69gr (Sierra HPBT spefcically), and only 25gr for a 70gr Speer SP.

I just don't think OAL has much effect on pressure unless it is extreme or touching the lands.

Also, QL was pretty good at predicting the speed (only 14fps difference) and that the charge gimp was testing would be over pressure....

Take a factory Rem with 6+mm to the lands so they are out of the equation and go 3mm either side of SAAMI spec and tell me what you see - my RUM was about 4gr (from memory) MORE powder to get speed back after seating out
Ive found that depth makes a difference - from Pistol cals through to my big guns. I'm not concerned about where the rifling is as long is its far enough away. My 1st and only attempt at it resulted in a action full of powder and I lost interest in chasing them and in my guns, doesnt matter
2mm in a 9mm case can increase pressures to blow up levels


ADIs data is measured in CUP.. QL in psi...
ADIs data is in 223 Winchester cases, not 5.56 Mil cases...
ADIs data is for a proj that takes up 2mm less case space...
ADIs data is for a proj with a softer jacket
Fruit salad

A 2 min search online suggests all those shooting ARs using 2206H (which is 4895) with 70gr VLD are seeing max loads of around the 24gr mark
Whats QL say to that?