Thread: Who says ADI max loads are soft

Originally Posted by Spanners

You're almost comparing apples and bananas and saying they are the same because they hang from trees

From what I have here at this time:
The Berger 70 gr VLD is 0.976" long.
The Sierra 69 gr SMK is 0.898".
(I dont have the HPBT Sierra, but from memory it is shorter again)

Given the same OAL, you're looking at an effective seating depth change back into the case of about 0.078" or close to 2mm
If the HPBT is shorter, you have increased that further again.

Seat the VLD out 2mm.. QL will tell you what you want (and expect) to see, and when fired (single load or bolt gun) the case will too.

Same same but different

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....