Note: I cross-posted this in the 10-22/.22 cal rifles section, and will also post it in Precision Rifle.

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Team, I promised I’d take the new Remmy Model 597 .22 LR out to the range to chart five loads after I got the new ATK Intensity 3.8 – 12x scope sighted in.

Some notes:

The process:

I have six 10-round mags for this rifle. There are five roundels on each target. The first round out of a mag is hand-chambered, and some say this affects accuracy.

For each target, I’d load up one mag with ten rounds of whatever ammo I would use, and load the other five with eight rounds each of that ammo. I took the 10-round mag and zeroed the rifle with that load; this sometimes took 20 rounds as each type of ammo would produce different effects on the rifle as it dirtied the bore and chamber in its own specific way. When the zero settled down, I’d shoot the remaining five mags into the five rouindels, firing the first round of each mag into a target completely off the stand so as to keep that hand-chambered round from ruining a group. A few times, I forgot to do this and just accepted the result.

Why 7 rounds?

The Speer manual tells us that reloaders should use groups of seven as they mitigate the risk of induced shooter error and are a large enough sample to really get a good representation of what the loads look like. The Remmy subs only have four holes because I just had enough rounds to get four groups as such.

Accuracy: The program generates the Average To Center number for both individual groups and the target as a whole. That last factoid is instructive to tell us how consistent the ammo is; a “best group” as prepared here is virtually meaningless if you can’t count on getting that kind of accuracy but one time in five.

CCI Minimags: I noticed a that they would group very consistently out of the rifle, except one round out of seven would go off into the weeds – either left or right in line with the group, or vertically (usually low) in line with the group. Had I not had these flyers, I would have gotten near SK Match performance and consistency out of them!

The entire target was measured. The "Average To Center" of the target, not just the one best group, was .956 MOA and average max spread was 3.107 MOA. Not bad.

Winchester Dynapoint GTs: Best value for bulk ammo for accuracy. Will have to test these against Thunderbolts or Peters as my rifle seems oddly accurate with them.

The "Average To Center" of the target, not just the one best group, was 1.073 MOA and average max spread was 3.107 MOA, the same as the CCI Minimags.

Remington Subsonics: Not as accurate as the first time I fired them! One group did fairly well, but as you can see the Average To Center for the entire target is not as good as the higher-speed rounds at 1.106 MOA, with the Max Spread of 3.145".

CCI Spitfire: The worst .22 ammo for accuracy I have ever fired. The target I have had three roundels which had so many wandering shots that I couldn’t determine where they hit. It’s odd, but the cases and bullets look better machined than all the rest of the ammo. I think they’re over-charged and the bullet is very light, and high-velocity kills accuracy in .22s.

SK Match: The gold standard – look at the ATC/Max Spread of the entire target; .662 MOA and 1.951MOA accordingly. This stuff is retarded accurate, and you’ll pay for it, too. 250 rounds cost me something like $45 delivered. Still, if you want to hit what you’re aiming at, SK Match is the stuff to use.

Well, there it is, folks. I will go back out and do a controlled test on some other loads.

Be advised, it looks like I gotta hog out the stock channel for the bore; it's getting touched by the stock.