Sadly, my experience is that each arm is niqe in what ammo it prefers.
My Series 70 positively hated Federal with it's truncated (flat side) cone shape; but would happy digest CCI 200gr "flying ashtrays." Best performance was with 185gr Silvertips.
The AMT hardballer would launch Federals, but not CCI, and had a "sweet spot for Hornady ammo.
The Sistema did not like HP ammo of most sorts.
The Norinco would happliy digest anything fed to it, but was most accurate with Black Talon--for no obvious reason.
The Officer's Model really likes 185gr hyrda-shok
Tha AO 1911A1 seems happiest with S&B JHP.
Not 1911--the taurus hated all HP ammo but, then again the frame was not drilled right, s it really hated all ammo.
The SIG P220 (US) also had a sweet spot for Hydra Shok--ust he big ones, not the 185s. The West German P220 likes JHP with an ogive, as long as they are not CCI or S&B. Neither of the S&W autos shot decently enough (for me, with the two I had) to even bother trying them with JHP.
So, I'm jaded. I pretty much assume I'm digging through all my partial boxes when I take something new to the range and try and see where it settles in best.
Oh, and that Series 70? More than 7500 rounds later, I still trust it will point better than my index finger.