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I just got two Tingle pistols, and I need to measure each bore so I can determine which specific lead bullet (or mold) to buy...
I just got two Tingle pistols, and I need to measure each bore so I can determine which specific lead bullet (or mold) to buy...
The bore diameter( land top to land top) is best measured with a plug gauge. The groove diameter will require a slug driven through and if odd numbered groove will require a tri-mic or Powely gauge to measure accurately. Cerosafe will work too.I just got two Tingle pistols, and I need to measure each bore so I can determine which specific lead bullet (or mold) to buy...
Yeah, I have a set of split ball gauges and they work fine except on odd grooved barrels. They are great for chamber mouths and other round holes.Not familiar but on original guns I unbreech and lube the bores of barrels then drive an oversized ball into the muzzle and out the breech. Measure groove to groove then peel off the splines and measure bore diameter.
On a new gun get a set of expandable ball gauges and use them. https://www.mscdirect.com/product/details/01719293
Most test patch thickness and material type by how it shoots but it can take a lot of trial and error shooting to sort out which is the best balance.Good to keep in mind for loading patch and ball. A factory or anyone else`s formula suggested .433 may work well with a .427-440 ball depending on patch and or lube and bore condition. For best results testing with different size patch and ball is the only way to know. I prefer to taper lap and polish my bores to a larger patch or ball size. Easy loading and cleaning result. Some insist better accuracy results also. Maybe, but not worse scores in matches by my tests results. Good new for plinkers though. Most any patch and ball combo that loads without much trouble will most likely work fine to 25yds...c
You can drop a section of heavy round stock into the bore to act as a slide hammer to tap the ball back out.
Unless you have one with odd numbered lands and grooves or gain twist.And if you slug it you can get both bore and groove dia unlike rigid gages.
Yea I think that was mentioned before.Unless you have one with odd numbered lands and grooves or gain twist.
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