Crown lapping

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SA Feral Shooter
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Crown lapping

Post by SA Feral Shooter »

Has anyone ever tried the marble/ball bearing valve grinding paste method for lapping a crown? I know the proper method to crown is in a lathe with both ends of the bore dialled in but I have read that you can get very satisfactory results using the above method.
I have a .22 I wouldnt mind trying on.
cheers,
Sean
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Camel
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Re: Crown lapping

Post by Camel »

De-burring tool on a cordless drill will do the job. :mrburns: :twisted:
SA Feral Shooter
.257 Roberts
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Re: Crown lapping

Post by SA Feral Shooter »

.....already tried that but thanks for the advice.
Camel wrote:De-burring tool on a cordless drill will do the job. :mrburns: :twisted:
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Camel
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Re: Crown lapping

Post by Camel »

I hope you were joking as much as me. :shock: A bloke I knew years ago had a ZKW hornet that he reckoned need a re-crown, he did just that, then tried to ell me that the chatter marks, from where the cutting edges on the de-burring tool jumped when they hit the rifling, was the reason why that rifle was so accurate. :shock: He seemed to manage to gut shoot rabbits at less than 100 yds, but the wind seemed to make him miss a lot when out any further. :roll: :lol: :lol:

There are some interesting videos on u-tube about this very topic if you get your google fingers going. :D
SA Feral Shooter
.257 Roberts
Posts: 781
Joined: Mon Aug 11, 2014 9:42 pm
Favourite Cartridge: .260
Location: South Oz

Re: Crown lapping

Post by SA Feral Shooter »

Lol yes I was mate, thats priceless , could chatter marks be the next bext thing towards ultimate accuracy?Ive even heard of people using a drill press :roll: :lol:
Camel wrote:I hope you were joking as much as me. :shock: A bloke I knew years ago had a ZKW hornet that he reckoned need a re-crown, he did just that, then tried to ell me that the chatter marks, from where the cutting edges on the de-burring tool jumped when they hit the rifling, was the reason why that rifle was so accurate. :shock: He seemed to manage to gut shoot rabbits at less than 100 yds, but the wind seemed to make him miss a lot when out any further. :roll: :lol: :lol:

There are some interesting videos on u-tube about this very topic if you get your google fingers going. :D
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DSD
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Re: Crown lapping

Post by DSD »

Camel wrote:De-burring tool on a cordless drill will do the job. :mrburns: :twisted:
I wish I had thought of that before I wasted my money on a counter sink set
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