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Range Report on 10/22 and SSS for 6-13-17
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Old 06-13-2017, 10:51 PM
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Default Range Report on 10/22 and SSS for 6-13-17

So I had some spare time this afternoon and it quit raining, so I decided to 'press on' with some more trigger time with the new personally-milled 10/22, the stainless steel, 1:9 twist, 0.920" bull barrel, and my favorite ammo, the Aguila SSS 60-grainers. I also recently picked up 300 rounds of CCI "Subsonic" 40-grainers (1050 f/s) and wanted to compare them to the SSS as well. I also had some new CCI "Mini Mag" 40-grain 1235 f/s I wanted to try too. So...

I set the target at the usual 35 yards for my back yard. Here is the CCI Subsonic 40-grain group. It took two shots to get 'on target', and it seemed clear to me that two more weren't going to improve this group.


And here's the 'analysis':


As you can see, nothing to 'write home about'. However, in fairness, I should probably try them in the 'finned' barrel, as 1) that barrel shoots straight, and 2) maybe these short bullets don't 'like' the 1:9 twist. I'll give them another 'shot' with the 1:16 twist finned barrel.

The "Mini Mag" was slightly worse. No need to show that target unless you really want to see it. I'll use the finned barrel for that cartridge as well, before I pass judgement on it.

You are about to see why I like the SSS. Here is a 10-shot group. The first three shots are the three to the right. The last seven obliterated the bullseye. And #4 was that high one at 11 o'clock. I'm liking this barrel and the new receiver!


And the analysis:

It was interesting to hear those last few shots. You could tell they weren't hitting anything but the backstop. That was cool.

Here are the numbers for those last seven shots:


That's 7 shots into 0.347". Just sub-MoA at 0.948. A dime is nominally 0.705" in diameter, so this group is half the size of a dime. Heck, even all 10 shots are covered by a dime. A moose's eye is about 2" in diameter.

So... Looks like I've got a good combo for this rifle.

Paul
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