It is not a have to have to run properly. The parts are needed if you want to run faster without over throws. The V4 on its own, set up properly will do accurate drops in 12 to 15 seconds. The V4 was not designed to run fast. But everyone who complains about it is trying to push 6 second throws which makes it over throw. The small tube design does not work optimally with all powders. That is where the threaded tips shine. The thread pitch is matched to the powder so it will flow properly.I don’t understand how people can claim the v4 works great then have to half a half dozen aftermarket parts to play with to try to make it perform.
The v4 always has been a terrible design that never should have come to market. The v3 was substantially better from a thrower and nothing on the market comes close to a v3 + IP
I will agree the V4 was pushed out with mediocre beta testing. Pulling the adjustment screw was dumb and created the shim issue.
The settings can be confusing too. You have to watch the transition. If it is less than 1.5 grains from target at the end of the transition it will likely overthrow. The software is designed for the small tube to run at full speed for a couple seconds so it can follow the calibration.
For the $$ the V3 with IP is the way to go. However, for those that have a V4 and can't afford another system but would like it to run better, there is a solution. We also put together a document that better explains the settings and has screen shots to help set it up properly.
My V4 has always run decent. I just did not like the 15 second throws. So I figured it out. I can get 8 second throws with some powders. 10 is the average without over throws. We tested Varget, H4350, H1k. N160, N555, RL 16. RL 15.5, N568, Retumbo and N570 to name the more popular ones.