Allure of the Ruger No1

Warren Knudsen · Aug 18, 2026

First group after bore sighting, load was just a random one so no load development and I have plenty of the 145 Speer GS, but what I discovered on checking the brass was a surprise, those line are from what I can only explain as chamber indentations, whether is is a rough reaming job or what, I dont know, any thoughts would be appreciated

Ray B · Aug 19, 2026

Step 1 would be to feel the chamber, if you can get your pinkie in it, or possibly straighten a paper clip and ben a quarter inch L angle then softly rub the point in the chamber and see if you can feel any ridges. The for sure check would be to get a cast of the chamber so it could be checked visually and with a caliper.

Warren Knudsen · Aug 19, 2026

Ray B said:
Step 1 would be to feel the chamber, if you can get your pinkie in it, or possibly straighten a paper clip and ben a quarter inch L angle then softly rub the point in the chamber and see if you can feel any ridges. The for sure check would be to get a cast of the chamber so it could be checked visually and with a caliper.

will try the paper clip, as I have sausage fingers

Goopy · Aug 19, 2026

As Ray said, the paper clip method will give you a read on the ridge issue. Another method is a dental pick (the relatively straight one)- you can feel any rough machining through the handle.

F. Vaccaro · Aug 19, 2026

Wow, that's a beautiful rifle, those rings shouldn't be there. Save a couple of fired cases in case you have to send it in. Fire a couple of factory loads to send in. Firearms manufacturers don't like handloads. I probably wouldn't say anything about handloads to Ruger!
That's not a bad group though!

Pole Pole · Aug 19, 2026

degoins said:
How bout a look at that knife

F. Vaccaro said:
Wow, that's a beautiful rifle, those rings shouldn't be there. Save a couple of fired cases in case you have to send it in. Fire a couple of factory loads to send in. Firearms manufacturers don't like handloads. I probably wouldn't say anything about handloads to Ruger!
That's not a bad group though!

Pole Pole · Aug 19, 2026

Maybe someone tried to extract a separated case with a reamer or ? I have a hard time imagining the factory would let this pass inspection but maybe it happened. The fired case tells you what you need to know.

Allure of the Ruger No1

Warren Knudsen

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