Reply With QuotePM owenslee i know he knows where. There is a thread in here some where pertaining your concern. Did you also try a search.
Pin Gauge
I have a Kotonics barrel I need to see if it's in spec. Could someone please provide me some information on where I can get a pin gauge to drop through my barrel? Company name, and size of gauge would be greatly appreciated.
PM owenslee i know he knows where. There is a thread in here some where pertaining your concern. Did you also try a search.
Next time you go to the range make some money. Just catch or retrieve your 6.8 brass and sell it.
01 FFL
NRA Lifetime
"Life's tough, it's even tougher if your stupid" John Wayne
Thank you WASSMAN, I did indeed use the search feature with no success. If you have any suggestions on search parameters, I would greatly appreciate it.
Here this might help. See owenslee posts. http://68forums.com/forums/showthrea...ight=drop+test
Next time you go to the range make some money. Just catch or retrieve your 6.8 brass and sell it.
01 FFL
NRA Lifetime
"Life's tough, it's even tougher if your stupid" John Wayne
I would suggest initially buying two gauges to inspect your barrel:
One english unit .2700" Plus gauge ( should be marked: .2700ZP) This will have a nominal dimension of. .2700" -.0000 +.0002 tolerance
The second english gage should be a .2700" Minus gauge ( should be marked: .2700ZM and will have a nominal dimension of .2700" -.0002 +.0000 tolerance.
First... leave the barrel and pins at room temperature (70 deg) for a minimum of several hours to stabilize. Use brown Jersey gloves to handle the gauge pins to avoid your fingers warming the pin.
Make SURE you do NOT have a burr at the gas port in the bore...by brushing the bore several times with a nylon or bronze bore cleaning brush. If the barrel has already been fired, this step is not needed as any burr that was originally present will be gone.
Be sure the bore and gauges are clean and dry. Do NOT lubricate either bore or pins.
Use the .2700ZP gauge and carefully place in the muzzle with the chamber end down sitting on top of a shop towel. If the gauges passes unrestricted completely through the bore of it's own weight and drops out the chamber... your barrel's minor bore diameter is above minimum tolerance and is fine. If the gauge is a snug fit... but still passes easily with LIGHT pressure applied against it using a coated / brass / aluminum cleaning rod... you are still good to go. If you feel resistance...STOP. If resistance is ONLY felt in the area of the gas port, you may still have an unremoved burr.
If the .2700ZP gauge will not pass through the bore with LIGHT pressure, then remove the gauge using a coated cleaning rod applied from the chamber until the gauges slips out of the bore. Then substitute the .2700ZM gauge from the muzzle and repeat the test. If the .2700ZM gauge passes easily through the bore of it's own weight or with light pressure... the barrel is up to .0002" undersize...but still safe to shoot. (I have safely shot a barrel that was approximately .0003" undersize. )
If the .2700ZM gauge does NOT pass through the bore with light pressure, then the barrel is more than .0002" undersize and would be considered questionable to shoot without further measurement, requiring the purchase of additional gauges.
The gauges I would suggest are Meyer Gauges and they can be purchased here for only a few dollars each + shipping.
http://www.meyergage.com/products/in...ass_z_pins.htm
HTH
Kerry
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300 AAC Blackout Chambering Cancelled:
Some time ago, Savage announced it would be chambering the Model 10 Precision Carbine in 300 AAC Blackout. Since that time, we have tested many variants of this cartridge in various barrel lengths and rates of twist. This exhaustive testing left us quite unsatisfied with the accuracy we were able to get from the subsonic loads in this chambering. Accuracy with the lighter, faster loads in this caliber was actually quite good. But we believe the real value in this cartridge lies in the use of subsonic loads for suppressed rifles. Therefore we have decided to scrap the project.
It is our understanding that pushing these heavy, slow bullets presents challenges not found in typical loadings and that our experience is not unique. Subsequently, many in the industry have simply adopted a lower standard for accuracy for these subsonic loads. While this does seem reasonable and we don't criticize any in our industry that have taken this approach, it just won't work for Savage.
Our brand was built on accuracy and we are too protective of our reputation for building the most accurate factory rifles available. We would rather walk away from this opportunity than sell a product that requires an explanation.
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Kerry, Thank you so very much! This is exactly what kind of help and information I was searching for. Your the best!
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