LowSpeedHighDrag

Thanks for the tip...

Yes, although I don't know what caused it. It happened with the original second upper. When I rebuilt it with a new upper receiver the problem went away. Didn't do anything to the buffer itself so I don't have any advice as to how to fix it.

Ran the PCC with the old upper on Saturday, and had no issues. Recoil was well controlled. Rebuilt the new upper and took it to the range today. Again, worked great. Okay, charging the action is a bit stiffer, but no big deal even when on the clock. Well worth the purchase.

Okay, at least found where the problem was. When I switched to the other upper the charging ran smoothly. There's something about the setup of the first upper that doesn't fit well with the buffer and makes charging next to impossible, and I assume the fault is with the upper. Now, to use the buffer in a match tomorrow...

Not that I remember, although I'm not that religious about reading instructions. Nothing on their website... I'll try lubing it today to see if it makes a difference.

Okay, perhaps more than a bit stronger. Shot it at the range today and found myself needing to pull fairly hard to charge the gun. No crisis, but not exactly smooth either. The interesting thing was when I went to put the gun away this evening I had real trouble charging it, but once I got it moving it went back to the way it ran earlier. No idea what’s behind this behavior. Still, definitely worth dealing with the hassle to get the superior recoil control.

Just got my Maxim Defense buffer. Works great. Softer recoil with no other obvious downsides. Can't comment on any changes in accuracy. Yes, the charging is a bit stronger, but I have a Devil Dog Concepts side charging handle installed - makes charging easier whatever you're using. Even with a normal AR-15 charging handle I can't see any real issue.

For Steel Challenge I aim with the outer circle more than with the dot. Easier to pick up.

Is putting a magnifier behind a red dot IDPA legal in PCC? I’m not asking if it makes any sense to do it, just wether it’s legal.

My uninformed answer is you'll need different buffer setups for the very different loads, assuming that a "one size fits all" approach isn't what you're after.

Okay, a brief update. Swapped in an Eclipse trigger off of an AR15 in place of the PDI. Recoil seemed a bit sharper, and the group size opened up. At 25 yards the PDI resulted in 3 rounds touching, which the Eclipse was more like a 1.5"-2.0" group. Hmmm. Put the PDI back, and had 3 incidents of the PCC doubling at a couple of matches. Not happy about that, as the last one jammed up the rifle and cost me 17 seconds to clear. I ran across a Timney AR9 trigger that I had ordered earlier and never got around to trying. Put that in, and took it to the range. Seemed an even better feel than the PDI, and ran smoother. Retained the previous accuracy. No doubling so far. Looks like that's the one that I leave in (well, for now, anyway). Ah, the saga continues...

Hiperfire customer service confirmed that both the Eclipse and PDI work in a PCC...

Thanks. I've got 2 PDI triggers now, and I think I'm going to just stick with them. Cheaper than buying 2 *more* Eclipses. I've got Eclipses on my ARs, and yes, they're marginally better in terms of trigger feel, but ...

Why the Eclipse rather than the PDI, which is made for PPCs? Any issues running the Eclipse with the PCC?

"They" being USPSA? IDPA?