Try Federal Guard Dog ammo in .45 or 9MM. It's a hollow point with a cover to feed into a 1911 short feed ramp. I personall would not carry a RIA1911, I have one, love it for a plinker but not as an EDC. A good G19 Gen 3 costs about the same. Good luck.
Another option is Corbon's Powerball. It is an expanding, round nose. I agree, I prefer higher capacity handguns that are not ammo sensitive. S&W M&P, HK VP9, Springfield XDs, Sig P320, Glocks are all great choices.
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