Morning at the shooting range

Finally got out to shoot my new rifle. Put the Marlin 30-30, targets, ammunition, tape measure, patching tape and binoculars into the car and drove out to the range. Weather was flaky, threatening rain, but it didn't. I set the target up 100 yards out. Doesn't seem like very far, but upon returning to the firing position, that target looked awfully small.
The Marlin, a classic from the 1950's, has an action smooth as glass, and a beautiful even trigger pull. This is the first time I've shot centerfire rifle since training for Viet Nam back in 1967. I squeezed off a string and then peered down range thru the binoculars. No luck, my eyes cannot see bullet holes at 100 yards even with 7 power binoculars. So I walk down range and take a look. Not too shabby. All the rounds are high, but inside the target, grouped inside a 7 inch circle. So I adjust the sights one notch and try again. Must have been the wrong way, the string goes clean over the target. Zero holes. So, I adjust the sight one notch the other way, try again, and I get a 4 inch group, a little high, a little right, but inside the target. And this with iron sights.
The Marlin has impressive report and a solid recoil. 30-30 is clearly enough cartridge to deal with anything I'm ever going to encounter in New Hampshire. The gun buffs don't say much about 30-30, 'cause it is so established, and what's to say about it? I looked up the ballistics, 30-30 isn't as powerful as the WWII rifle cartridges like 30-06, but it is a good deal more powerful than the ammo used by modern assault rifles like the M16 and the AK47.
After burning thru $30 worth of brand new 30-30 ammunition I switched guns, tried out my Ruger 10/22 on same target. My first try gets a 9 inch group and my second a 13 inch group. Net result, I can shoot the heavier 30-30 somewhat better than I can 22. Might be the shorter barrel on the Ruger, might be the heavier trigger pull on the Ruger. The Ruger trigger is smooth but heavier than it might be. Might also be after a couple of hours on the range I'm getting tired.
So, better luck next time. I still have two rifles, lying on the kitchen table, needing cleaning.