Chasing the throat..

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All handloading data posted on Full-Bore UK from 23/2/2021 must reference the published pressure tested data it was sourced from, posts without such verification will be removed.
Any existing data without such a reference should treated as suspect and not used.

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Forum rules
All handloading data posted on Full-Bore UK from 23/2/2021 must reference the published pressure tested data it was sourced from, posts without such verification will be removed.
Any existing data without such a reference should be treated as suspect and not used.

Use reloading information posted here at your own risk. This forum (http://www.full-bore.co.uk) is not responsible for any property damage or personal injury as a consequence of using reloading data posted here, the information is individual members findings and observations only. Always verify the load data and be absolutely sure your firearm can handle the load, especially older ones. If in doubt start low and work your way up.
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ovenpaa
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Chasing the throat..

#1 Post by ovenpaa »

Christel has been diligently filling cases for me today, and as it is a new year I thought it was time to confirm the OAL in my AI again, it has moved 8 thou with 155 Scenar's over the last 12 months, not sure if that is good or bad for a 7,62x51

Anyone?
/d

Du lytter aldrig til de ord jeg siger. Du ser mig kun for det tøj jeg har paa ...

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rox
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Re: Chasing the throat..

#2 Post by rox »

Sounds like quite a lot of erosion, but I guess that depends on how many rounds since last measurement, what type of powder and load, and what type of barrel?
Presumably you're using identical tools (same comparator etc)?
Robin128

Re: Chasing the throat..

#3 Post by Robin128 »

Has the accuracy changed?
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ovenpaa
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Re: Chasing the throat..

#4 Post by ovenpaa »

Rox, Same comparator, different OAL gauge and case as I use a different thread these days so that may well contribute partly to the variation. Border barrel, 155 Scenar's with 47.5 grains of N540 and it has shot just under 1500 rounds over the last year including some very hard hitting Danish milsurp.

Rob, It has started to give string vertically. climbing my maybe 1 MOA at 1000 yards over the first 3-4 shots, it then settles down and holds reasonably well. I need to get the old book out and have a count of the total number of rounds I have put through it.
/d

Du lytter aldrig til de ord jeg siger. Du ser mig kun for det tøj jeg har paa ...

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