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Joined: Aug 2018
Posts: 305 Likes: 7
Sidelock
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OP
Sidelock
Joined: Aug 2018
Posts: 305 Likes: 7 |
I have the 12 ga tool. Is this also supposed to be able to measure 16 ga?
Thanks
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Joined: Feb 2008
Posts: 11,345 Likes: 391
Sidelock
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Sidelock
Joined: Feb 2008
Posts: 11,345 Likes: 391 |
My Stan Baker bore gauge will measure 10, 12, and 16 gauge bores. But it doesn't have the range to measure much choke in 16 gauge. There were other Baker bore gauges with 20-28 gauge probes and .410" Bore- probes. These were sold separately, or as a complete set.
A true sign of mental illness is any gun owner who would vote for an Anti-Gunner like Joe Biden.
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Joined: Dec 2001
Posts: 6,997 Likes: 402
Sidelock
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Sidelock
Joined: Dec 2001
Posts: 6,997 Likes: 402 |
Yes but it does not do a very good job on 16ga. I bought a Skeets bore gauge for use in 16ga and it is fine.
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Joined: May 2004
Posts: 2,092 Likes: 13
Sidelock
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Sidelock
Joined: May 2004
Posts: 2,092 Likes: 13 |
I have a Stan Baker set also. The best I can do is measure with the 12g head and the 20 bore head and then do the math. Not sure if it is accurate using that method.
So many guns, so little time!
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Joined: Dec 2001
Posts: 3,964 Likes: 89
Sidelock
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Sidelock
Joined: Dec 2001
Posts: 3,964 Likes: 89 |
Skeets works great in a sixteen but has a hard time with a ten.
When an old man dies a library burns to the ground. (Old African proverb)
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Joined: Aug 2018
Posts: 305 Likes: 7
Sidelock
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OP
Sidelock
Joined: Aug 2018
Posts: 305 Likes: 7 |
Just finished cleaning a 16 GA LC Smith barrel and will measure it with a 12 ga SB gauge. I will post results and see if it makes sense.
Thanks all
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Joined: Feb 2008
Posts: 11,345 Likes: 391
Sidelock
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Sidelock
Joined: Feb 2008
Posts: 11,345 Likes: 391 |
One sure way to verify your results is to compare the readings you get on the Stan Baker gauge with measurements taken with a good set of plug gauges. Of course, the Stan Baker, or Skeets, etc., type instruments can pass by a very slight obstruction in part of the bore, such as a minor dent. A solid plug gauge will not.
My use of both the Stan Baker gauge and plug gauges gives me confidence that the Baker gauge is reasonably accurate when properly calibrated and used correctly. It is less tedious than pushing a series of plug gauges through a bore with a wooden dowel rod. It can also detect whether a portion of the bore has been excessively polished or honed to remove pits. But the plug gauges are also useful, because they can do double duty as barrel dent removal plugs when used in conjunction with a small brass or plastic faced hammer.
A true sign of mental illness is any gun owner who would vote for an Anti-Gunner like Joe Biden.
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Joined: Feb 2006
Posts: 3,737 Likes: 55
Sidelock
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Sidelock
Joined: Feb 2006
Posts: 3,737 Likes: 55 |
I use a Skeet's gage and when I bought it used it was messed up and called and spoke to Dean Harris, he told me to send it back and he would fix it. He replaced the head and the gage. I also asked him if he could lengthen the rod and he said he had a few left and could do that. I can now read half way through a 32" barrel. I also made a .650 ring for 16 gauge guns, works fine but if the muzzle end is full choke I cannot get in to measure it. I then use a telescoping gage to measure choke. I made plug gages out of aluminum in .002 increments to recheck bores if there is a question. To remove dents I make an aluminum plug gage and if that fits right I then make one from mild steel with a taper to get under the dent and gradually work it through. An old timer back when told me to lightly heat the barrel near the dent, warm to touch as this "loosens'" the molecules and it easier to remove the dent.
David
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Joined: Aug 2018
Posts: 305 Likes: 7
Sidelock
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OP
Sidelock
Joined: Aug 2018
Posts: 305 Likes: 7 |
I cleaned the 16 ga LC Smith barrels (30" FWE)
Both chambers measure .745 at back and taper to .730'ish before rapid constriction at the forcing cone.
Right barrel - gauge slides in and you can tell it is straining a little bit against its limits but the bore measures .648 and repeats after measuring several times. At the choke end I cannot get the head of the gauge down the bore but a Galazan choke gauge shows tight full and using a dial caliper I get inside measurement of .615 so -.033 constriction.
Left Barrel - The bore measures .654 and repeats after measuring several times. At the choke end I cannot get the head of the gauge down the bore but the choke gauge shows tight full again and using a dial caliper I get inside measurement of .615 so -.039 constriction.
I was a little surprised at the tight bore measurements as I thought they would be a little more like .662
So I am still not sure about the accurate use of my SB 12 ga tool in a 16 bore.
Thoughts?
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Joined: Feb 2006
Posts: 3,737 Likes: 55
Sidelock
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Sidelock
Joined: Feb 2006
Posts: 3,737 Likes: 55 |
The bores on your 16 ga. would be around .650. Sometime in the 1930's the bores were changed to .660. The chamber length was still 2 9/16" and in the very late 1930's the chambers were changed to 2 3/4". Some of the very early changed chambers had 2 3/4" Chambers stamped on barrels water table.
David
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