Well, 336A, don't give up so easy!
Why did you choose H335? Not that it is a bad choice. While I have never used it, and I don't load for the 30/30, it just seems like you have given up way too easily, friend!
Since these are low volume rounds, meaning you aren't needing a "gazillion" to shoot every week, I'd like to suggest trying 2 different powders.
The first being Varget. That stuff turns by AR into a sub MOA sniper rifle with 69gr bullets. The next would be BL-C(2). I use that in the AR too only for lighter bullets. Still, with 55gr HPBT projectiles, I get MOA + a little. Either one is much better than what I get with factory ammo.
Do you have a chronograph? Just wondering what the difference in velocity is between the factory stuff and your reloads.
At any rate, good report. Sorry things aren't working out to well for you at this point. Hope they change for you.
Oh, one more question. What were the bullet weights of the FTX bullets? Did you know that they are available to handloaders now?
Just wondered.