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All Springer/NP/PCP Air Gun Discussion General => Machine Shop Talk & AG Parts Machining => Topic started by: Rob M on April 13, 2017, 08:22:21 PM

Title: where to get .30 caliber barrel blanks and liners ?
Post by: Rob M on April 13, 2017, 08:22:21 PM
I always see guys mentioning TJ, dont see a website. Went to green mountain , they do have some options.. Just curious
Title: Re: where to get .30 caliber barrel blanks and liners ?
Post by: rsterne on April 13, 2017, 08:37:34 PM
Mike at TJ's in Alexandria, KY.... no website, you can call him at (859) 635-5560.... He has both the .300 cal, 26" twist airgun barrel I designed, and a selection of .308 cal. PB barrels in various twists.... in a couple of different ODs.... Prices are by the inch, $4.75 last time I checked.... They are blanks only, in the white, you need to do all machine work and blue them.... If you need a finished barrel, you can get them through Jim Gaska at Marmot Militia or W.A.R....

Bob
Title: Re: where to get .30 caliber barrel blanks and liners ?
Post by: Rob M on April 13, 2017, 08:45:44 PM
Thanks Bob, thats a better price per inch than all the websites im looking at.. Green mountain has a clearance on some barrels, but the specs arent right..
Title: Re: where to get .30 caliber barrel blanks and liners ?
Post by: StevenG on April 13, 2017, 09:34:19 PM
Are the liners at https://www.trackofthewolf.com (https://www.trackofthewolf.com), TJs?

I always thought that they were.
Title: Re: where to get .30 caliber barrel blanks and liners ?
Post by: rsterne on April 13, 2017, 11:16:26 PM
Yes, that's correct, TJ's is the manufacturer.... I don't think TotW carries airgun liners....

Bob
Title: Re: where to get .30 caliber barrel blanks and liners ?
Post by: HighAltitudeAir on May 14, 2018, 10:47:22 AM
Hi All
I know this is an old post, but what od’s are used for the 257 and 308 air gun barrels? I think Doug uses theses with carbon fiber expoxy sleaves. Right? That makes a very stiff barrel. The 257comes in 7/16 and 1/2” od. The .308 only comes in 1/2” od. $6.05/inch. for both sizes.
Sorry about bri ging up old threads.
CH
Title: Re: where to get .30 caliber barrel blanks and liners ?
Post by: rsterne on May 14, 2018, 01:36:53 PM
You can get .257 and .308 liners in 9/16" OD, so I would think the .250 and .300 should be available in that as well.... I had Mike make me a .257 and a 6 mm with a 14 mm OD (just under 9/16") by hammering it down smaller, so he can do that, within reason.... Just give him a call.... If you are going to use a CF sleeve, then the 1/2" OD is the best for American made CF tubing, or the 14 mm OD for Metric tubing.... You should bore the receiver out 2-3 diameters deep to the OD of the CF sleeve you are going to use for the best rigidity....

Bob
Title: Re: where to get .30 caliber barrel blanks and liners ?
Post by: HighAltitudeAir on May 14, 2018, 04:38:59 PM
Hi Bob
Oh, ok I under stand now how they got the bigger plus barrels for the 308 and 257.
Thank streighting me out. Which did you like better the 257 or 6mm. I was thinking 6.5 would be better for bc numbers and extrem range, wouldn’t it?
CH
Title: Re: where to get .30 caliber barrel blanks and liners ?
Post by: rsterne on May 15, 2018, 12:35:46 PM
No matter what caliber you use.... the important thing is bullet availability in suitable weights and barrel twist rates that will work with them....

Bob