kneelingatlas

How about a little background, what are you looking to accomplish? Shooting USPSA competition? Just a hot load for target practice? Like Pat said above, 3N38 is the best powder available for hot 9mm loads with the lowest chamber pressure, the max 147gr load listed in their load manual propels a Hornady XTP 1,207fps http://www.vihtavuori.com/en/reloading-data/handgun-reloading/9-mm-luger.html

Boy isn't that the truth! I'm glad you chimed in Eric, the comp you designed is the best of any I've tested

CFD comp weighs 1.8oz, LSI weighs 2.3oz The CFD shoots slightly softer and slightly flatter, both good comps though.

Right on!

Much better! Still a hair more crimp than I prefer, but if the work, roll with it Is that the 0.375" crimp?

In the description they say it lasts 20K rounds, for $99 that's half a penny per round. Besides, Tanfoglio factory comps are aluminum and I've never heard of one breaking.

If you're not chamber checking your match ammo, I strongly suggest you start. You can easily do 100% of your match ammo the night before sitting in front of the TV, takes me about an episode of the Walking Dead

In the only one which counts: the barrel I plan to shoot it through ?

I've done one before, I suppose I could do it again. The other option is to use a short reset disco like in your Limited Pro.

I don't crimp enough to dent the jacket, just enough to straighten the brass: 0.378".

Drill and tap it for a pre travel screw

You have boxes of ammo labeled "do not use"?!?

Everyone has a unique sensitivity to the flash, the noise and the violent impulse, just pick a load you shoot well and roll with it, the dot is the biggest advantage of an Open gun anyway

Did you pull any bullets from the first batch and weigh the charges? Like Jack said, every powder has a point past which more powder yeilds less velocity, you could be over the hump getting 170pf on the way back down. You already back off the crimp which I think will help, but I also recommend loading ten each at 9.0, 9.2, so on up to 10.2 and running them over the chrono.

Awesome!

Yes, there is a point of diminishing returns. A book load listing more pressure does not necessarily produce more down force with the comp (the pressure drops faster with faster burning powders as the volume behind the bullet increases). Yes, the noise comes from burning powder exiting the barrel. No, you're not the only one Like you said, your setup is unconventional in a number of ways, so you won't see the same results as others shooting Open guns with: -smaller bores -fewer holes -better comps There's no nice was to say it: the comp on the V12 Gold Team is terrible. Comps serve two functions: to divert gasses upward, reducing the "muzzle flip", and to provide a bearing surface to catch gasses and pull the gun forward, reducing the "slap in the hand". The two tiny ports in the V12 comp don't do a very good job of either, made worse by drilling 0.420" holes in the baffles. The majority of the down force comes from the 12 ports in the barrel which do very little to mitigate that "slap in the hand". Given all that you may find a different balance between muzzle flip, noise, and violence than someone shooting a 9mm or 38 super with a better comp and fewer holes. If I were in your situation my focus would be on predictable dot movement, I suspect your fastest times will come not from your flattest load, but the one which allows you to watch the dot lift and gets it back on target fastest. Hint: springs and firing pin stop angle will do as much to that end as will the powder or bullet weight.

Oh yes, if it rubs, polish it! Inside the frame, inside pin holes, the sides of the hammer, everywhere

As long as you don't run the press like a drunken sailor you'll be fine

SP2 a and 3n38 use interchangeable load data, 9.4gr under a 115 @ 1.161 makes major and is listed in the online load manual It doesn't get any better if you ask me!

Is it falling to half cock when you rack the slide? If not it's possible you have some interference between the sear, trigger bar and disco. Did you have to do any fitting of the disco?

The hammer spring has little to do with the SA pull weight, the hammer and sear are the important part there; a sub-three pound SA is attainable with the factory weight hammer spring. The DA pull on the other hand is very much dependent on the hammer spring weight, but polishing is also very important, the more you polish, the heavier spring you can run and still get a light DA pull. For example, CGW sells hammer springs for the CZs in 8.5#, 11.5#, 13#, 15# and so on; the 8.5# is generally dependent on Federal SPP for reliability and can get DA pulls as low as 4ish pounds, the 11.5 can be reliable with Federals, Winchester, and CCI (maybe Remington too, but I've no first hand experience) and can get 5-6 pound DA pulls, the 13# can pop most everything and is capable of sub 6# DA pulls, but with lots of polishing. Extended firing pins, reduced power firing pin springs, help with reliability as well. I run 11.5# hammer springs in my DA CZs.

Is there more information you're looking for on the topic Jared, or are you just in a hurry to sell something?

The factory plastic grips are pretty thin, I have a pair I'll sell for $20:

Only the left side safety detent uses a spring.

There are two springs at the rear of the sear cage of the TS, that might be one of them.