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Shooting & Reloading - Mausers, Big Bores and others >> Mauser Discussion Forum

TilleyMan
.333 member

Reged: 23/08/05
Posts: 272
Loc: Melbourne, Australia

Re: BRNO ZKK 601 dilema?
18/01/10 04:01 PM

George

Nearly every ZKK I've ever seen has a dodgy crown, and benefits greatly from a re-crowning job... depends on whether there are also rust pits at the crown or not. Even just a ballbearing hotmelt glued to a suitable length of tube and used with valve grinding paste to recut the crown at right angles to the bore will work fine if there is no pitting.

Another problem with .308 ZKK 601's (and I have two of 'em) is that the chamber is often very large towards the rear (excess runout when machining?), causing 'potbellied' fired cases that won't fit back into the chamber at all unless precisely indexed to where they were fired

Moving the barrel in one extra turn and rechambering is another relatively cheap fix that often restores accuracy without losing the unique ZKK barrel profile with integral rear sight base.
A standard barrel profile just doesn't look right IMO, and machining in that double dovetailed sight base is VERY expensive... if you can find a gunsmith even willing to tackle the job.

I'll try and post some pics if I can find them of my reworked ZKK600 in .270... with 6x32 Zeiss Jena QD scope. Yes, a 6x scope was a very rare factory option vs the usual 4x QD scope.

A simple quick'n'dirty ball-bearing recrown halved group sizes at 100m to ~30mm with Remington Corelokt factory 130gr loads... I was going to rebarrel it to 9,3x62mm but it shot so well for a hunting rifle I kept it as a .270

Cheers

TM

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Subject	Posted by	Posted on
BRNO ZKK 601 dilema?	GK	17/01/10 05:13 PM
Re: BRNO ZKK 601 dilema?	BwanaBob	21/01/10 09:47 AM
Re: BRNO ZKK 601 dilema?	GK	21/01/10 01:37 PM
Re: BRNO ZKK 601 dilema?	tophet1	22/01/10 10:27 PM
Re: BRNO ZKK 601 dilema?	GK	23/01/10 01:09 AM
Re: BRNO ZKK 601 dilema?	TilleyMan	23/01/10 03:27 PM
Re: BRNO ZKK 601 dilema?	earlchesnut	28/03/10 10:24 AM
Re: BRNO ZKK 601 dilema?	Bramble	28/03/10 10:57 AM
Re: BRNO ZKK 601 dilema?	GK	16/04/10 08:20 PM
Re: BRNO ZKK 601 dilema?	tophet1	16/04/10 09:34 PM
Re: BRNO ZKK 601 dilema?	GK	20/03/10 03:25 PM
Re: BRNO ZKK 601 dilema?	Brithunter	20/03/10 08:27 PM
Re: BRNO ZKK 601 dilema?	GK	23/01/10 06:03 PM
Re: BRNO ZKK 601 dilema?	TilleyMan	23/01/10 07:28 PM
Re: BRNO ZKK 601 dilema?	FATBOY404	23/01/10 08:28 PM
Re: BRNO ZKK 601 dilema?	tophet1	23/01/10 08:45 PM
Re: BRNO ZKK 601 dilema?	GK	23/01/10 09:06 PM
Re: BRNO ZKK 601 dilema?	TilleyMan	22/01/10 10:19 PM
Re: BRNO ZKK 601 dilema?	4seventy	17/01/10 09:46 PM
Re: BRNO ZKK 601 dilema?	pablo_mauser_66	17/01/10 11:01 PM
Re: BRNO ZKK 601 dilema?	GK	18/01/10 10:29 AM
Re: BRNO ZKK 601 dilema?	JACKEL	19/01/10 01:30 AM
Re: BRNO ZKK 601 dilema?	GK	19/01/10 02:47 PM
Re: BRNO ZKK 601 dilema?	TilleyMan	19/01/10 03:08 PM
Re: BRNO ZKK 601 dilema?	Sarg	19/01/10 08:35 PM
Re: BRNO ZKK 601 dilema?	JACKEL	20/01/10 01:06 AM
Re: BRNO ZKK 601 dilema?	Sarg	20/01/10 10:39 PM
Re: BRNO ZKK 601 dilema?	JACKEL	20/01/10 11:47 PM
Re: BRNO ZKK 601 dilema?	Sarg	21/01/10 06:52 AM
Re: BRNO ZKK 601 dilema?	GK	19/01/10 08:29 PM
Re: BRNO ZKK 601 dilema?	Sarg	18/01/10 10:06 PM
Re: BRNO ZKK 601 dilema?	pablo_mauser_66	18/01/10 10:44 AM
Re: BRNO ZKK 601 dilema?	TilleyMan	18/01/10 04:01 PM
Re: BRNO ZKK 601 dilema?	supergnome	18/09/15 05:23 AM
Re: BRNO ZKK 601 dilema?	xausa	18/10/15 12:04 AM
Re: BRNO ZKK 601 dilema?	FATBOY404	18/01/10 04:10 PM
Re: BRNO ZKK 601 dilema?	DGR375	17/01/10 06:21 PM
Re: BRNO ZKK 601 dilema?	tophet1	17/01/10 08:43 PM

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