223 sierra tipped 69gn matchking

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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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Maggot
Posts: 739
Joined: Tue Sep 22, 2015 2:22 pm
Home club or Range: HRA and LERA

Re: 223 sierra tipped 69gn matchking

#11 Post by Maggot »

Blackstuff wrote:No problem, didn't read like that to me at all, the joys of text and not speech eh! lol

Yeah the ones i got were actually sent to me by mistake, they were brand new out at the time. They were a lot more expensive than the standard SMK's so thought i would try them but i was having to put them so far into the case to get them to fit in a magazine that the neck was no longer gripping the bullet because it was on the ogive. wtf
Blimey
Del
Posts: 11
Joined: Fri Jun 29, 2018 12:59 pm
Home club or Range: not got on yet
Location: East Lothian

Re: 223 sierra tipped 69gn matchking

#12 Post by Del »

well guys i seated at 2.250" done loads 21.4gn , 21.6gn 21.8gn and 22gn so far all grouped with in 1" at 100yds av just made up my second batch going up 22.2gn , 22.4 , 22.6 and 22.8 just waiting on the weather to calm down and see how they go

thanks for your help
atb Del
Maggot
Posts: 739
Joined: Tue Sep 22, 2015 2:22 pm
Home club or Range: HRA and LERA

Re: 223 sierra tipped 69gn matchking

#13 Post by Maggot »

Mattnall wrote:Seat them so they fit and feed from the mag easily.
No idea on powder charge, but it sounds about right (somewhere around 24gn of a suitable powder is the norm). Try changing the powder increments by 0.5gn and then when you get near the mark make a few minor adjustments around that load, will save time and powder.
Any reason you didn't go for the 77gn SMK (or TMK) with that 1:8" twist?
Oi....You the Matt I know? ;)

This was my take, half a grain at a time. Unless you weigh each charge (I do) you could be over .5gr error anyway.
Del
Posts: 11
Joined: Fri Jun 29, 2018 12:59 pm
Home club or Range: not got on yet
Location: East Lothian

Re: 223 sierra tipped 69gn matchking

#14 Post by Del »

well here are some of the results still playing with it all shot at 100yds the low shot on the 21.4 gn was me i pulled the shot then 3 all within an 1inch done 21.4 again just to check and still got to do 22.6 and up going to do 22.4 again aswell
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