Teslong drive me crazy

The borescope did it.......

Very rarely perfectly straight
Choot it

does that barrel have 5R rifling?

Call them and ask them if it’s a 5r.
It's the reamer lead cut
Just shot the damn thing and be happy

You mean sloping longitudinally at the chamber end. I mean, that’s what you are showing in your pictures.

If so, is this not the lead part of the throat which absolutely is supposed to slope. I understand that 1.5 degrees of slope is fairly common.

You might want to look at a SAAMI chamber drawing.

Cheers.

Baron23 said:

You mean sloping longitudinally at the chamber end. I mean, that’s what you are showing in your pictures.

If so, is this not the lead part of the throat which absolutely is supposed to slope. I understand that 1.5 degrees of slope is fairly common.

You might want to look at a SAAMI chamber drawing.

Cheers.

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He’s talking circumferentially, where the freebore meets the groove(not the 1.5 deg slope of the lands) . As viewed in the pic, the right side of the groove is cut further towards the muzzle than the opposite side of the same groove.

Thank the Lord for borescopes. We can keep these custom barrel scammers in check!

Barrel looks fine. That cross bore "taper" at the start of the grooves is made by the leading edge of the cutting tool (or button). Usually cutting tools have a slight taper for chip removal and help reduce chatter, etc. Now with that being said, take your borescope out and shoot it!

papershredder said:

Barrel looks fine. That cross bore "taper" at the start of the grooves is made by the leading edge of the cutting tool (or button). Usually cutting tools have a slight taper for chip removal and help reduce chatter, etc. Now with that being said, take your borescope out and shoot it!

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Like you mean, a reamer?

FredHammer said:

Like you mean, a reamer?

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Yeah, that too

Ahhhh, another previously undiagnosed case of BoreScopeitis...

@Barzor all joking aside, the rifling looks jut fine. I've seen straight to about 45 degree angle of the leading edge of the rifling.

A borescope is just like any other diagnostic tool. One just needs to know what they are looking at and that takes time/experience. One could fuck up using a stethoscope if they didn't know what they were doing with it. I'm sure if I looked at a colon during a colonoscopy I'd freak out on stuff a doctor would say was just fine.

Barzor said:

Thanks for helping me.

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Throw the motherfucking borescope in the trash.

You're welcome.

Barzor said:

Thank you everybody. We have all these tools to make things easier but if you don’t ask or know what you are looking at what’s the point. How can someone learn about things without asking.

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Mate don't worry about what the cool kids say to impress the masses. It is a tool, and can only be learned by asking questions.
You are right to have thought it best to shoot things first though, look for problems after if that doesn't go well.....

Bore scoping your rifle is like driving your vehicle with the radio off....You will hear shit and think is that normal.... turn the radio back on and everything is good.