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Post by epanzella on Jan 31, 2015 23:43:58 GMT -5
I thought I started this thread already but I can't find it. I have 2 brand new Savage factory hex breech plugs with standard vent liners. If I machine my 458 McGowan blank to fit these plugs, will I be able to upgrade to a bushing plug in the future without tearing down the gun again? Once the barrel is cut to finished length it won't be long enough to go completely thru my headstock and reach the spider.
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Post by airborneike on Feb 1, 2015 1:52:14 GMT -5
Epanzella,
Yes, the plugs are identical with the exception that the bushing plug is drilled to 1/4" x .590 deep and threaded 5/16 x18 where the ventliners go.
The standard ventliner plugs are not very hard to modify for the bushings if you want to do it yourself.
best,
Mike
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Post by epanzella on Feb 1, 2015 12:41:42 GMT -5
Thanks Mike, that's just what I wanted to hear (read).
Ed P
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Post by airborneike on Feb 1, 2015 15:27:30 GMT -5
Ed,
I use a SB heavy 10L for chambering because it has a short headstock but there are times when I need to use the big 16" lathe. It has a long headstock and the solution for short barrels that works (for me
anyway) was to turn a piece of aluminum round to a slip fit in the headstock bore. I made the rod about 16" long and on the end where the barrels fit, press fitted a piece of brass and turned a 60* point.
About an inch from the barrel end I turned a groove and fit a soft O ring and did the same about 3" back. The o rings fit snug and takes any chatter out.
Not as accurate as the spider but will usually keep concentric to .001 with a set tru or 4 jaw chuck.
Mike
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Post by jims on Feb 1, 2015 16:51:14 GMT -5
One time I had one give me just a bit of trouble, not much really but I now use Permatex anti-seize, part no. 80078. I think it is nickel based. It says it works from -65F to 1600F. I have never had any trouble using this but it is messy to say the least.
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Post by jims on Feb 1, 2015 20:27:52 GMT -5
I posted this wrong, should have been on the stuck ventliner. Sorry.
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Post by epanzella on Feb 2, 2015 15:47:32 GMT -5
Ed, I use a SB heavy 10L for chambering because it has a short headstock but there are times when I need to use the big 16" lathe. It has a long headstock and the solution for short barrels that works (for me anyway) was to turn a piece of aluminum round to a slip fit in the headstock bore. I made the rod about 16" long and on the end where the barrels fit, press fitted a piece of brass and turned a 60* point. About an inch from the barrel end I turned a groove and fit a soft O ring and did the same about 3" back. The o rings fit snug and takes any chatter out. Not as accurate as the spider but will usually keep concentric to .001 with a set tru or 4 jaw chuck. Mike I was thinking at some point I'll prolly have to make some sort of barrel extension for shorter barrels. Never thought of making a center though. Good stuff. Thx Ed P |
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Post by airborneike on Feb 3, 2015 0:37:36 GMT -5
Ed,
Forgot to mention that when using the rod in the headstock, I use the spider screws to hold it in place after adjusting to needed length. You can push the barrel back into the rod tight and not hurt the crown with the brass end. Also, if you make the brass point big enough it will fit the chamber end of the barrel when doing crown work.
Mike
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Post by epanzella on Feb 3, 2015 15:00:05 GMT -5
Ed, Forgot to mention that when using the rod in the headstock, I use the spider screws to hold it in place after adjusting to needed length. You can push the barrel back into the rod tight and not hurt the crown with the brass end. Also, if you make the brass point big enough it will fit the chamber end of the barrel when doing crown work. Mike Got it, thx. I'll be making the internal threading and boring tools from O1 tool steel in the next day or two. All the tooling I have is too big to fit in the bore. Ed P |
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