before you worry about keeping the gun flat shooting, find a load that runs in your gun 100%
we’ve turned a century old proven, simple and reliable blowback technology into something that is no longer that simple, no longer proven and not reliable in the quest for flat shooting gun.
the idea behind the pistol length PCC barrel is to use the same ammo you shoot in production or factory ammo and start there as a baseline, once you find a powder charge that reliably cycles in the gun, start playing with bullet weights to get you PF around 130-135