Barrel coming out of alignment during threading

[DaveTooley]

Here's what I use. I have it mounted in a toolholder and drop it on the tool post vs a stand. Easy to run in and out of the barrel.

Interapid Test Indicator 312B-15, Horizontal, 0.060" Range, 1-1/2" Dia., 0.0005" Graduation - 12-006-3

Shop Interapid Test Indicator 312B-15, Horizontal, 0.060" Range, 1-1/2" Dia., 0.0005" Graduation - 12-006-3 from the experts at Penn Tool Co., blending tradition with cutting-edge technology. Empower your manufacturing with precision toolsget started today!

www.penntoolco.com

 

[SKWERLZ]

Here's what I use. I have it mounted in a toolholder and drop it on the tool post vs a stand. Easy to run in and out of the barrel.

Interapid Test Indicator 312B-15, Horizontal, 0.060" Range, 1-1/2" Dia., 0.0005" Graduation - 12-006-3

Shop Interapid Test Indicator 312B-15, Horizontal, 0.060" Range, 1-1/2" Dia., 0.0005" Graduation - 12-006-3 from the experts at Penn Tool Co., blending tradition with cutting-edge technology. Empower your manufacturing with precision toolsget started today!

www.penntoolco.com

Yep
That’s what I use.
It a really nice indicator, MSC occasionally has them on sale in their sale brochure.

 

[LVLAaron]

Yep
That’s what I use.
It a really nice indicator, MSC occasionally has them on sale in their sale brochure.

Shows $363 at MSC for me today.

 

[flatlander]

I'm wondering if the OP is using a range rod (which is what he stated), or a 'Gordy' rod that's not tapered, and uses standard pilot bushings that fit piloted chambering reamers? There's quite a difference between the two...