Low pressure 28 gauge

[Aaron Beck]

I recently had a load tested with blue dot.. because ive got a bunch and it was commonly featured in older manuals but with different components. Pressure was in the 7-8K range and fairly consistent. It is not "clean burning" by any stretch, So i stocked up on unique (thanks to some friends) and use it for 5/8 and 3/4. I wouldnt classify the unique as low pressure though, at least in 3/4oz.

[Bill Murphy]

Aaron, the 28 gauge is normally loaded to a higher pressure than larger gauges. Unique is a perfectly suitable 28 gauge powder. A slower powder like Blue Dot is about the only way to lower pressures in the 28 with the exception of lowering the shot load. I'm sure you are familiar with "Burning Rate" charts which will help you to select powders.

[Aaron Beck]

Mr Elder was concerned about the integrity of his barrels, apparently on the advice of a known gunsmith. Thus, I offered my experience with Blue Dot. I believe the blue dot was in favor for thinwall tubesets at one time.

[Bill Murphy]

Care to share the pressure testing results with Blue Dot? Who was the tester? A dirty powder is no big deal if the results of testing are in your favor. I would like to read about the Blue Dot being the hot lick in tubes. I don't remember reading that before. Please tell us about your grandfather's 28 gauge. What make is it? Fluid steel or Damascus?

[Jeff Elder]

Originally Posted by Bill Murphy

Care to share the pressure testing results with Blue Dot? Who was the tester? A dirty powder is no big deal if the results of testing are in your favor. I would like to read about the Blue Dot being the hot lick in tubes. I don't remember reading that before. Please tell us about your grandfather's 28 gauge. What make is it? Fluid steel or Damascus?

00 frame 28 inch 28 gauge. Vulcan steel VH measures .027 wall thickness last 12 inches of barrels

[Jeff Elder]

Also in notes from Turnbull

REPAIR
Raise multiple dents in both barrels, best possible. Will not be able to bore polish or strike out remnants due to remaining wall thickness in barrels