Author Topic: Lockdown beater  (Read 2466 times)

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Offline Baggawind

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Re: Lockdown beater
« Reply #10 on: May 06, 2020, 11:24:06 AM »
The barrel is 18 inches long. I had to turn it down over the whole length to clear the cylinder as the barrel sits very low in the breech block. I turned it between centres to make sure the bore was concentric.  I might try to make a barrel support as the barrel does flex easily. What I am pleased about is the old mags seem to be functioning well , despite being well worn. The other thing is i,ve had a change of mind about is the stock. I can,t be arsed to make one so I called my mate Dave Whelham to see if he has anything I might be able to adapt. He has a couple of HW 80 stocks that might do the trick. The cylinder on an 80 is only a mil or so smaller than the Zbrioa one so it should be do-able. I worked out the bar per shot is 1.14. , better than the Zbrioa bull pup I own.

Online Gambo

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Re: Lockdown beater
« Reply #11 on: May 06, 2020, 11:26:24 AM »
So is it an SMK QB barrel Mel?

Have you eyed down the bore to see if it's internally straight?

Offline Baggawind

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Re: Lockdown beater
« Reply #12 on: May 06, 2020, 07:06:12 PM »
Yes, it,s pretty straight. Not only that, I found a slight tight spot at the muzzle end and cut the barrel to suit , giving it a slight choke. It is dead accurate without a silencer . The one on it now has been cut down to five inches and has no baffles inside, just a couple of hair rollers wrapped in felt. A mate is going to loan me a Weihrauch silencer to try. Probably end up with more questions than answers  ::)

Online Gambo

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Re: Lockdown beater
« Reply #13 on: May 06, 2020, 08:49:44 PM »
Is the muzzle threaded or are you using an adaptor?

Offline Baggawind

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Re: Lockdown beater
« Reply #14 on: May 07, 2020, 02:31:41 PM »
The barrel is threaded but I had to make an extension piece , also threaded , to clear the cylinder. I,ve just tried a Weihrauch silencer and still no joy. It prefers my shortened home made unit. It has no baffles. Oh well, I have other things to worry about ( read elsewhere ).

Offline Baggawind

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Re: Lockdown beater
« Reply #15 on: May 08, 2020, 03:07:15 PM »
I,m starting to get really p....d off what with the compressor and this darn rifle. I found the extension piece wasn,t as true as I thought so I made another. Still no joy . I can,t test it sans silencer as there are builders working in the neighbourhood . I guess i,ll finish up buying a new barrel , probably a Weihrauch one from Silco. Any way i,m giving it a rest for now.

Online Gambo

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Re: Lockdown beater
« Reply #16 on: May 08, 2020, 03:50:19 PM »
What a downer.

Walking away until you are fresh is the better option than trying to carry on only to get more and more frustrated with it.

Offline Baggawind

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Re: Lockdown beater
« Reply #17 on: May 09, 2020, 12:25:29 PM »
You got that right. I tried re-crowning the muzzle , this time doing it the BSA way. If you look at an R-10 barrel they simply cut it square with the bore , no chamfer . They recess it to protect the bore. I also tapered the breech a bit deeper as I think the old magazines aren,t helping matters . Still no joy. I wish this lockdown would end because then I could go to my farm indoor range .

Offline Baggawind

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Re: Lockdown beater
« Reply #18 on: May 10, 2020, 02:37:32 PM »
Well i,ve had another morning trying to sort it out and I might have cracked it.  I re-worked the crown again and did a load of work on the badly worn mags. Initially nothing seemed to change so I sorted through a whole load of pellets to find something that would work. I offered up several brands to the muzzle to test if the heads were a good fit. Not surprisingly , most were either sloppy or a loose fit. Then I tried the only true 4.5 pellets around , namely Crosman Premier and Bis-mags. Then down to testing. Remember I don,t yet have a stock for this rifle so i,m shooting off a bench rest that,s sitting on a coffee table. Not ideal. And , to make matters worse , it,s blowing a hooly
outside. But , the Bis-Mags grouped very well despite the wind.  And, better still , it,s shooting with one of my long silencers fitted. Happy days.

Online Gambo

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Re: Lockdown beater
« Reply #19 on: May 10, 2020, 05:50:38 PM »
Good news mucker.

Not surprising the heavy bismags bucked the wind the best.

Please keep us informed Mel. ;)