I have posted about a bazillion questions here on the 700X... Just kinding, more like 10 ot 12. I have tried every suggestion, video, dryer sheet, internet search and adjustment imaginable. In a last ditch effort, I purchased 3 baffles for my AutoDrum. I installed them one at a time. After installing the second one, I got really consistent drops for 54 rounds... then one charge was 1.9 grains and I was loading for 4.0. The consistency was gone just like that. I tried adding powder to the same level in the measure- Nuttin'. Added the third baffle and made no difference.
700X is a fantastic shooting powder- 9MM for me- I have to weigh EVERY SINGLE CASE! I have switched powders to Silhouette and AutoComp, both meter PERFECTLY with the AutoDrum. I still have 4 unopened pounds that I have listed here for sale. It just isn't worth the hassle to use it.
I also check visually as each case is loaded and some rounds are light and fluffy and fill the case more than others but yet would weigh 4.0 and others were tight and dense and be noticeably less in the case and weigh 4.0
I have 1300 rounds left that are loaded with 700X and for now it is my IDPA ammo- It is good powder but it will not meter for me at all.
A good friend of mine uses 700X exclusively for his 9MM and uses a Dillon 650 with whatever Dillon powder measure and has no metering issues what so ever. Grrrrr...
I wish I had better news for you, but this has been a 2 year journey to try to get it to meter correctly.
I hope you can find something that works and share it with the rest of us.