75 gn AMAX in a 1/9

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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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20series
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75 gn AMAX in a 1/9

#1 Post by 20series »

Peeps

Is anyone using 75gn Amax in .223 with 1/9 twist?? If so what loads are folks using?

I have a box kicking about and want to give them a bash in Debs' Mossberg MVP.

I have Vit133 and 140, IMR4895, Elcho 17 to hand.

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Re: 75 gn AMAX in a 1/9

#2 Post by andrew375 »

I use them in my Savage with N140. They shoot very well indeed out to 1000 yards.
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Re: 75 gn AMAX in a 1/9

#3 Post by 20series »

andrew375 wrote:I use them in my Savage with N140. They shoot very well indeed out to 1000 yards.
Cool, rough idea on load ??
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Re: 75 gn AMAX in a 1/9

#4 Post by mag41uk »

I have used up to 77gn with N140 in my mvp 1 in 9 with no issues.
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Re: 75 gn AMAX in a 1/9

#5 Post by StanDeasy »

According to the Berger twist rate stability calculator. the 75gr Amax is marginally unstable in a 1/9 twist. But, hey give them a bash, they may work.
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Re: 75 gn AMAX in a 1/9

#6 Post by Sim G »

I loaded some for use in my rifle which is 1in 8". Two mates tried them also, both 1 in 9s. One, a Mossberg MVP with a 24inch barrel shot them well. A Savage with a 20 inch barrel didn't like them at all.

I'd loaded with Ramshot Tac, close to the maximum. It may have been an extra velocity gain in the 24" that helped them along their way.
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Re: 75 gn AMAX in a 1/9

#7 Post by North Star »

I haven't shot .233 for a few years, but I did have reasonable results using 75 grain A-max bullets. This was with 25.8grains of varget through a 28" match barrel, and using fire formed cases. The twist was 1:9.
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Re: 75 gn AMAX in a 1/9

#8 Post by 20series »

Thanks all for the info, I know that 1/9 is a bit slow for heavier rounds. I think these 75gn were from back when I had my 1/7 AR.

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Re: 75 gn AMAX in a 1/9

#9 Post by andrew375 »

20series wrote:
andrew375 wrote:I use them in my Savage with N140. They shoot very well indeed out to 1000 yards.
Cool, rough idea on load ??
Data in is the Viht loading tables. My savage puts them out at 2900 fps.
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