With a little attention to them and the way in which one shoots them, yes they are what many here have found to be great shooters with some awesome accuracy. My 223 will do half inches with me doing my part and good ammo.
A few things that I have noticed about shooting my H&R's is that:
-They have to lock up tight and have no play in the barrel. And I mean side ways. Also no gap between the barrel and receiver.
-I don't like for my barrel to drop like a brick after I press the release button. I like to have to apply just a little force to break it open. Thus shiming behind the forarm, or even using adhesive, like JB Weld, to hold the forarm spacer tight and secure. This reasures me that everything is good and tight. Again this is my opinion.
-EDIT- yes I forgot too, the "O-Ring". I use it a homemade rubber gasket to float the forearm. All on my wood stocks. Not to mention sanding the forearms channel to make sure nothing touches my barrel. Synthetics are a little different to tune.
-I like shooting off Bi-Pods. Most of these rifles are forearm sensitive, so I had to adjust where I put my Pods at, eventually leading to the rear of my forearm:
http://www.graybeardoutdoors.com/phpbb2/viewtopic.php?t=70928&highlight=trying+bipod+method-As with any other firearm, if there are any and I mean
ANY burs at the muzzle you will have issues. If your barrel has them send it back to NEF/H&R and get it worked on. They will pay for your misfortune.
-The way you shoot them is a huge part of getting the most out of your rifle. Sence they are forearm sensitive, they like being shot with the bags under the reciever. Also following through with the trigger pull and making sure that the transfer bar is fully engaged. And as always, breathing is key too. These are just a few, but I am sure you are aware of some others that are given.
But I stress doing my part. The hammer fall is slow compared to a good bolt action, so you have to adjust to it if you haven't been use to a single shot hammer fall rifle. I know I sure as he!! did :oops:
Then you have the issue of weight of trigger pull, good ammo, optics and mounts,also barrel break in period. The polishing of the bore will speed this up 10x as fast.
These are a few of my tips. I learned most from here, and the rest from excercise. You have to shoot your gun. Practice!!!
My 2 cents-Aaron