Quick fix is a light BCG and lighter spring, but as noted, its just a bandaid.

But it will show that the gun can work.

I"d open the port until it works, then open it one size more.

I"d only put an ADJ block on if needed after that.

I"ve fired so little of factory ammo of any type I have no clue whats up to speed so to speak or not.

But I'd try it with factory Gold medal match 69s for one, if it functioned with that, I'd be somewhat worried about opening the port personally... might lean to spring or lighter BCG, the bolt that used to? come wiht Colts that had the bottom milled off should be lighter....

We can keep Larry Root and all his idiotic blabber and user names on here, but we can't get Ralph back..... Whiskey Tango Foxtrot, over....