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popgun Member
Joined: Jan 26, 2005 Posts: 735 Location: Mitchell, GA, U.S.A. (2007 pop. 191)
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Posted: Wed Jun 28, 2006 2:11 pm Post subject: Re: C O L |
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rrogacki is correct about using the proper collet for the comparitor. The collet measures from a predetermined datum on the bullet for the measurement. Also be sure to rezero you callipers when using the comparitor and subtract the inch lengt of the comparitor itself for the final measurement.
rrogacki,
Nothing wrong or unusual about your Tikka. Unlike Davyboys's rifle, most rifles can chamber a longer round than the magazine will accept. The magazines are designed to accept a SAMMI length round.
_________________ Safe shooting,
Chris Young, aka: popgun, Moderator
I don't know everything but I have made most of the mistakes already and lived through many of them. |
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Daveyboy Member
Joined: Jan 22, 2006 Posts: 143
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Posted: Thu Jun 29, 2006 2:18 am Post subject: Re: C O L |
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Looks like I am using the comparator slightly differently than it's intended to be.
This is what I did. Put a collet on the factory round and measure it. This came in at 2.938"
Put the measuring case with bullet into the chamber, adjust, measure. This came in at 3.151"
Make up an empty round with a target length of 3.1", which I did.
I used the same collet as I figured that I am measuring the same dimension all the time. The round of 3.1" wouldn't allow the bolt to close and the lands were fouling the bullet. I seated the bullet deeper until it came in at 2.988" and that fitted.
The conversaton is slightly academic as I will find out how it shoots tomorrow! 5 round batches made with three different powders. That is the only variable so we shall see!
Hey! I'm only killing deer with it!
D
_________________ Why, in films, don't they just kill it? |
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popgun Member
Joined: Jan 26, 2005 Posts: 735 Location: Mitchell, GA, U.S.A. (2007 pop. 191)
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Posted: Thu Jun 29, 2006 1:46 pm Post subject: Re: C O L |
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Have fun at the range and I hope you find the load that puts them in the boiler room every time.
Your collets should be marked with the caliber .22, .24, .25, .26, .27, .28, .30 etc.
Keep a record of the setting for that bullet. Each bullet weight/make will have a different measurement.
_________________ Safe shooting,
Chris Young, aka: popgun, Moderator
I don't know everything but I have made most of the mistakes already and lived through many of them. |
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Vince Site Admin
Joined: May 25, 2005 Posts: 15704 Location: Brisbane AUSTRALIA
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Vince Site Admin
Joined: May 25, 2005 Posts: 15704 Location: Brisbane AUSTRALIA
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