seating depth for .223 in an AR.

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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 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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John MH

Re: seating depth for .223 in an AR.

#11 Post by John MH »

Knowing where it came from its most likely a 1in 8, that will be fine for 69 and 77 grain SMKs. If it a slower 1 in 9 it will still be ok with 69s and maybe 77s. Lighter bullets will be ok with either 1 in 7, 8 or 9.
paulbradley

Re: seating depth for .223 in an AR.

#12 Post by paulbradley »

It is a 1:8 twist.
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Re: seating depth for .223 in an AR.

#13 Post by Mattnall »

Then try the 77SMKs. They are a great bullet and not much more expensive than the 69SMKs or Hornady or Berger of similar weight.
The 77 also seems to be more jump tolerant than the Hornady 75s, and you often get a fair bit of jump from the mag length ammunition.
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