In the often 40 shooter+ PPC events we threw in the Queretero Club in Mexico, the "minimum power factor" was the .380 ACP cartridge as any non-reloaders in the Clubs wanting to use a stock Glock 25 would be using factory ammo. The "tink tink crowd" as we referred to them. Generally, the reloaders used a 125 Power Factor loading, usually a 160 grain Lee tumble-lube SWC and around 3.3 to 3.5 grains of Bullseye giving around 800 fps from a 4-inch Model 10.
A couple of times, the dedicated "Combat crowd" threw a "Big Boy PPC" with a 180 powerfactor stipulated to enter. And there were people that felt a 180 powerfactor was still too fey and wanted a 200 powerfactor. We never did a 200 powerfactor PPC but I can see it happening if the current powder/primer desperation ever works itself out and the Commie lefties don't succeed in disarming the Western World.
I did take a video of what shooting the first stage of the PPC would be like using a 200 powerfactor -- I was using a 200 grain SWC bullet we cast from an Accurate Mold that we pushed out of my 4-inch Heavy Duty at just over 1,000 fps. One of the primers misfired, not because of a light spring because I don't use them but because we were using some pretty junky primers from Tecnos Industrias that would misfire in the Glocks and occasionally in the revolvers. But powerful loads and double-action can work out just fine if you work at it. The Heavy Duty is an N-frame, and it's quite heavy enough that a 200 grain bullet at 1,000 doesn't buck too much.
The 205 grain "spaceship" bullet we used for the Coonan's we brought down remarked as .38 Specials on the left, the 202-grain Accurate Molds SWC in the middle and a standard Lee 160 grain TLSWC on the right. Both the "spaceship" and the 202 grain SWC are routinely loaded up over 1,100 fps in the remarked .357 Magnums. My friend Michael has loaded it up to 1,240 fps out of his 6.5 inch Model 27 for pin shooting, and reports it blows the pins into next week.
Shooting the first stage of the PPC using my 4-inch Heavy Duty and the 200 grain SWC at 1,000 fps for a 200 powerfactor. Despite one bad primer, it's a good representation of a powerful load shot double-action.
In the 9-pin events, revolvers are quite competitive but since the pins are at the back of the table, a normal 160 grain SWC at about 850 fps is plenty. Like a 130 - 135 powerfactor. Reloading speed is important. The 9-pin events we throw separate revolvers and autos since autos generally can do the whole 9-pin event without a reload. Mexico has no magazine restrictions so a Beretta 92FS in .380 Cal with an 18-round mag is totally fine. Again, double-action accuracy is a must.
For the fullbore 5-pin event, the pins are 3 feet in front of the back of the table. "The load" generally used is the Elmer Keith Heavy Duty load, the Lyman 170 grain LSWC and 13.5 grains of 2400. That generally gets the job done quite well. And you have to shoot double-action if you want to have a snowball's chance in hades of winning. However, at the next pin match I suspect a few people will be shooting the 200 grain SWC up around 1,200 fps because it's apparently so effective.
From a target-shooting point of view, double action shooting isn't going to win the Bullseye game. But from a self-defense point of view, shooting single-action would only rarely be called for: in the case where you had to make a precise shot at a medium range and actually had the time to do it. I realize Canada doesn't approve of the self-defense concept -- a stance that makes me nauseous as it indicates the people behind that stance have no clue what happens when only the bad-guys have the guns -- but double-action shooting is where it's at in the self-defense revolver world. Revolvers generally out-power automatics of equal size in Mexico where caliber restrictions are strictly applied, and power delivered quickly is what's needed in a defensive situation.