Author Topic: 7mm Hayabusa Build (Read 22800 times))

Tofazfou · « **Reply #20 on:** February 28, 2015, 12:48:10 PM »

BoB and Doug,

No sirs, Not as of yesterdays mail (2-27-15)

Veral works like that. Every mold (3 so far) he has done for me goes like that. It takes a long time (month+) then all of a sudden, POOF, its in the mailbox.

As soon as it gets in i will post some pics. We still have todays (saturday) mail......lol!

rsterne · « **Reply #21 on:** February 28, 2015, 12:58:33 PM »

In my case, it won't show up here, it is being shipped directly to Erik and HollowPoint Mold Services for conversion of 2 of the 4 cavities.... I have no doubt that I will have everything on the gun done, except the chamber, long before I ever see the mold....

Bob

rsterne · « **Reply #22 on:** February 28, 2015, 09:07:18 PM »

Today I pretty much finished up the barrel.... I fitted the sleeve to the breech and machined a groove in the middle of the threads for the setscrew to limit barrel rotation once I find the right spot.... Then I turned down the muzzle for the Bellevilles and threaded it for the Hatsan Air Stripper, and made the collar to put the shroud in compression.... Here is the assembly....

Here is the assembled breech....

Here is the muzzle assembly....

and here are the parts used at the muzzle....

The shoulder that the shroud will sit on is 1" long at both ends for stability.... The tension on the Belleville washers is provided by tightening the Air Stripper.... Those are the stiffest Bellevilles I could get, capable of 1335 lbs. force when flat.... although I don't expect to have to use that much to find the "sweet spot".... I have another set of Bellevilles that are 600 lbs. flat load.... The only jobs I couldn't finish were machining the O-ring groove in the thimble (the 7.5mm x 1.5mm O-rings aren't here yet) and chambering the barrel (no bullets yet).... I'm also waiting for the 25mm OD x 22mm ID Carbon Fibre shroud tubing.... So, now we wait....

Bob

KnifeMaker · « **Reply #23 on:** March 01, 2015, 01:15:20 AM »

Darned good looking Air Stripper! And good thinking using Bellevilles to set the tension on the shroud tube! Gotta remember that!

Knife

Tofazfou · « **Reply #24 on:** March 01, 2015, 01:55:29 AM »

WOW! Its coming together mighty nicely Bob. Loving it more and more. Im really starting to fathom the "TENSION" idea.

Watching this one in FULL ATTENTION mode!

Tofazfou · « **Reply #25 on:** March 05, 2015, 07:58:54 PM »

BoB,

Got the mold in today sir. Nothing better than getting off work EARLY then checking mail when you get home to find you have something NEW in there...............................................OOOOH LA LA!

Will post some pics!

rsterne · « **Reply #26 on:** March 05, 2015, 10:51:47 PM »

Nice.... I imagine mine will be arriving at Erik's any day now....

Bob

dyotat100 · « **Reply #27 on:** March 06, 2015, 03:39:02 AM »

Well mine showed up also. But it's not what I ordered. I know I ordered .285" or .286".

Hopefully yours are the right size

Tofazfou · « **Reply #28 on:** March 06, 2015, 11:24:16 AM »

Quote from: dyotat100 on March 06, 2015, 03:39:02 AM

Hopefully yours are the right size

I 2nd that one Bob. Eric told me years ago to get your mold 1st, CONFIRM IT, TEST IT to make sure its up to your accuracy standards then send it too me for HP'ing. This saves you 106 bucks!

rsterne · « **Reply #29 on:** March 06, 2015, 12:40:58 PM »

The cross border shipping kills me.... I may as well give the mold to Erik right off instead of paying three International postage rates....

Bob

Tofazfou · « **Reply #30 on:** March 06, 2015, 09:57:29 PM »

ahhhhhh, the ole cross border shipping rate thingy. Didn't think of that one Bob.

Stupid me just assumes everyone lives in the good ole USA.......lol! Sorry Bob. You know what your doing.....lol!

Tofazfou · « **Reply #31 on:** March 06, 2015, 10:00:55 PM »

Bob,

So i cast some of your bullets this morning and they look pretty good.

They weigh between 98.5 and 99.5 grs and mine drop at .286"+ which is perfect for them to be sized down to about .2855".

The BoatTail looks really good on them also

rsterne · « **Reply #32 on:** March 06, 2015, 10:35:28 PM »

Slap up some pics !!!

Bob

bradyman1 · « **Reply #33 on:** March 06, 2015, 11:17:08 PM »

As always beautiful work Bob. What kind of milling machinery do you have?

rsterne · « **Reply #34 on:** March 06, 2015, 11:22:01 PM »

Would you believe a 1970s vintage Milling Attachment for my Atlas Lathe?.... 3" vertical travel and 6" on the cross-slide.... and the vice is only 2.5" wide and 1" deep....

It is nice and easy to setup for angles, though....

Bob

rsterne · « **Reply #35 on:** March 06, 2015, 11:57:23 PM »

My BBT mold has arrived at HollowPoint Mold Services.... getting closer.... *grin*....

Bob

Tofazfou · « **Reply #36 on:** March 07, 2015, 02:08:52 AM »

Bob,

Dougs mishap scared me. I would call Eric to see what SIZE is stamped on the side of your mold. Mine was exactly what i ordered.

I will post up some pics.

dyotat100 · « **Reply #37 on:** March 07, 2015, 09:31:44 AM »

I talked to him and he said he made 2 .284's and a .286. I'm going to cold cast it to see what size it is. He said send it back if it's not going to work for me.

I know I ordered .285" or .286". I also ordered .100" holes in the plate and they are .122"

rsterne · « **Reply #38 on:** March 07, 2015, 12:05:39 PM »

I just emailed Erik to have him check that it is .284....

EDIT: Erik replied that it is, indeed, marked .284 which is what I ordered.... so I should be good to go....

Bob

Tofazfou · « **Reply #39 on:** March 07, 2015, 09:14:14 PM »

Then GOOD Bob. nothing like waiting for a long time to find out in the end everything is WRONG!

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7mm Hayabusa Build

Author Topic: 7mm Hayabusa Build (Read 22800 times))