quote:

Originally posted by kilyung:
No surprise given the ballistic advantages of 17hmr. It’s much flatter shooting given its velocity. I’ve had good luck with 40gr SK Rifle Match on my cz455 and rebuilt Marlin 60. Dime size groups at 50yds.

quote:

Originally posted by fritz:
I don't know enough about your Savage rifles to understand if their accuracy at 50 yards is comparable.

17 HMR will almost certainly show better accuracy if it was shooting the better ammo, like Vmax.

With the exception of the CCI Std, the 22lr ammo you used has accuracy that is best described as lackluster. It probably cost 1/3 that of the 17 HMR ammo. Therefore you're not comparing apples to apples.

CCI Std is pretty much the floor level of quality ammo. It shoots pretty well in some guns, but not so much is others. I find it pretty inconsistent.

That said, 1.5" groups with CCI Std is pretty bad. Using my Kimber sporter rifle, CCI Std has produced 50 yard 5-round groups of .3" to .7", with the majority being around .5" to .6". With my quite inaccurate and old Winchester 250 lever action, CCI Std is .75" to 1.0" ammo.

If you really want the 22lr Savage to show good accuracy, you must pay for quality 22lr ammo. Figure increasing the cost to $.15 to $.20 per round. Quality ammo manufacturers include Wolf, Eley, RWS, and Lapua, SK.
Wolf -- Match Target, Match Extra
Eley -- Match, Tenex, Club, Target
RWS -- R50, R100, Special Match, Rifle Match
Lapua -- Center X
SK --Rifle Match

Understand that 22lr ammo is finicky, from barrel to barrel. Accuracy also varies from one manufacturing lot to the next. WTF flyers are common within almost every box of ammo. When switching from one ammo type to the next, it can take 15-20 rounds of the new ammo before accuracy settles down. So...if you're trying a different 22lr ammo every 10 rounds and evaluating accuracy, you won't be obtaining realistic results.

Most importantly, did both of you shoot both rifles? If your son shot the 22lr with good accuracy and you did not, then technique likely is an issue.

quote:

Originally posted by maladat:
With Wolf Match Extra .22LR out of both a Kidd-barreled 10/22 I built and a Sako Quad with a Lilja barrel, I get one-ragged-hole 10-shot groups at 50 yards and ~1.25" 10-shot groups at 100 yards.

quote:

Originally posted by muzzleloader:
I think to compare apples to apples you would have to shoot both 17 and 22 out of the same rifle like the CZ switch barrel rimfires . Even so, there would still be the variables of two different barrels and head spacing . This is a good question though and I’d like to hear more from the more experienced on here, as I am thinking of a new bolt rimfire. Let’s throw the 22mag in the fray as well.

quote:

Originally posted by hrcjon:
I'm not a .17hmr user so let's get that out of the way. But I have learned a lot about accuracy in rimfires. The fact is we are talking "price point" rifles (that is not meant as a negative) means that the results aren't absolute in any sense. These are guns with great price/performance and in the end maybe you can find ammo that each likes and get results you like. But they really don't represent the absolutes of the cartridges themselves.