Thread: Who says ADI max loads are soft

Originally Posted by Spanners

Very different in reality to my gun - 2217 and 208 Amax at around 94 IIRC (my data is at home) for that initial speed, and 98 when set out and finished. I may have gone 4mm or something, but its neither here or there



According to QL maybe, but in reality there is a big swing in case weight (= capacity)
The last batch of BLK brass we cut was very heavy
I can weigh and test a few when i get back as have a variety




Perfect



I agree with the primer signs and QL results in this case - no questions asked
I generally agree with most things I see in QL, but it is nothing more than a equation end of the day



1 of my AR barrels with stick a case with ammo that the other bunch and bolt guns eat up all day. It just happens to be the most expensive one with the flashy name on it also.
Mate has same issues also, 2 barrels from same mfg and 1 will stick
I know for a fact that there is no issue with the ammo.. 10k + rounds have been fired of it and its a pretty generic load

69 Sierra 26gr 2206H 77000psi
68 Hornady 26gr 2206H 83000psi
If that is indeed true, then it goes further to push the point that you cant just swap out a proj and expect the same results.
Also that QL isnt always right (it is however scarily accurate with my 308) as 83k psi breaks lugs ARs quick smart.
That 68gr Hornady load is a SWEET load that is popular worldwide.. so 83k psi?? yeah nah...

The thing with QL is the rifle is not taken into account. It is simply a model based on case, powder and projectile specifics. The rifle has nothing to do with it. It is just a prediction. As I understand it though if you measure as many of those variables and measure what comes out the end (speed which accounts for rifle variables) then you can get an indication of the pressure required to reach said speeds... Like @Beavis's example. QL suggests he should only need 24.4gr 2206H to reach his 2864fps from a 16" barrel with all else being equal. This is at a predicted 65,000psi. But because, I am guessing, his rifle variables, he needs an extra grain and a half of powder to reach said speeds.

If you really wanted to get pedantic with case capacity, you can measure and change those variables in QL but I dont have the time or energy to do it. Your reloading practice should always air on the side of cation and allow for a worse case but starting low and working up. Again QL is only indicative but if you play with it enough you will figure out which variables are the one that have the greatest effect on speed and pressure. My observations are that seating depth, especially on magnums and anything over bore, plays a lesser role...

All I will say is that I would be bloody careful about picking and choosing the results you use and which you dont. I dont believe you can get money for nothing with gun powder, so if you are getting super speeds then it is likely due to there being enough pressure there to push the bullet that fast; and if QL suggests that that pressure is 10k or 15kpsi I will be bloody worried...

And the whole point I am arguing is exactly that, there are no free lunches.