I bought a big box of Winchester white box .45 target, and the bullet nose is sort of flat. I was getting some failures to feed in my CZ 97 so I got some Sellier & Bellot (Czech) full metal jacket walking-around ammo. No probs with the 9mm Winchester though.
Best to check with your gun the ammo you intend to use. Blunt FMJ 45 ACP is pretty common, and so is failure to feed with it. Never had any feed problems with my Colt 45s, blunt FMJ or hollow points.
Sometimes if you explain the problem to a gunsmith, they can polish the feed ramp and cure the problem with any gun.