Been there and done that lol.I started my post earlier in the day and then finished it later. That's why I missed your posts about cutting trees.
I see black locust around, just not where I cut.
I have an 8 pin sprocket on my MS 650. I'll swap it onto the 460 and give it a try. Maybe I'm a bit too aggressive on the rakers. I try to keep the hook to a minimum. When I first started filing I went to deep and put too much hook on the tooth. I thought they were really sharp. Then I cut some dead ash and all the thin sharp edges broke off. It's a good feeling to hand file and have it cut straight and pull nice chips.
Have a great day!
Well maybe you can stop by and ask if you can cut some, it's great wood, but so are those ash trees.
If you look closely at the new x-cut chains, they have a standard hook, then just at the leading edge of the top plate it's sharpened very aggressive. They seem to get into the fiber quicker and easier, but because it's only that aggressive on the leading edge they cut fast and very smooth. And because the chain is much harder than the older Oregon chains it stays sharper much longer out of the box. And to all the guys who touch a chain up out of the box(sometimes I do too), you should try one out, great cutting chain for sure and if you square grind or file they will hold a nice edge once converted. I have a nice pile of them in 20" here, and I'm watching on a deal for 24".
Semi skip doesn't seem to need quite as much off the rakers, if you just file the cutters back a touch that may be all you need. Also if a chain isn't smooth cutting bigger wood(I know you said yours was), then the saw may not have the power to pull it hard enough to overcome an aggressive hook if the wood is hard.
This is an aggressively filed semi-skip chain in very hard wood, it would be very rough in the same wood with a stock 70cc saw. You can even see it grabbing onto the knot on the top of the smaller cherry, that's also where technique can "help"(it still needs to be fixed) on a chain you just want to run until you can refill and file the cutters back a little. A chain that chatters because it's too aggressive is not as fast as a smooth running chain.