I have tested the Winchester Silvertips, but did not include with the results above because they are 125 grain bullets, and the "old -vs- new" comparison was only 130 grain bullets, since that was the only kind of old ones I could find.
The Silvertips averaged 1201 fps from a Sig P220 with approx. 4.25" barrel, and 1231 fps from a RIA 1911 with 5" barrel. Pleae note that was not the same 1911 used in the test above, and it was not on the same date.
I do not have any Corbon 38 Super ammo to test, wish I did, but I will acquire some when I find it. I'm not sure I understand the Aquila question, please try me again on that one, thanks...