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Re: 7mm rsaum
Posted: Wed Jul 12, 2017 5:41 am
by Berger
My 284 will push the 180gr hybrids at 2880 fps easily on RS60. 52 grains will take it to 2900 fps. So my reakoning 7mm saum isn't as efficient as the 284.
56.7grs of N165 behind the hybrid in my 284 gives 2820fps.the saum needs 60.5grs for an extra 50 fps advantage
Re: 7mm rsaum
Posted: Wed Jul 12, 2017 7:06 am
by ovenpaa
You can push the SAUM a fair bit quicker however I never saw any real accuracy advantage.
Re: 7mm rsaum
Posted: Wed Jul 12, 2017 4:31 pm
by Berger
Yeah I've done the ballistic calculator figures and the advantage is only a small margin.an extra 80 fps above the 284 velocities is only 2 inches less drift at 1000yds in a 10 mph full value wind.the 7mm wsm is about the same advantage over the saum at 3060 fps.thats if all are running from 2880 fps with the 284. then 2950 with the saum then 3060 with the wsm
Re: 7mm rsaum
Posted: Wed Jul 12, 2017 5:26 pm
by Berger
What is barrel length on your saum paa.
Mine is 28 inches.
Re: 7mm rsaum
Posted: Wed Jul 12, 2017 8:31 pm
by ovenpaa
31" these days
Re: 7mm rsaum
Posted: Wed Jul 12, 2017 10:19 pm
by Berger
I've loaded up 5 to try on N560
Re: 7mm rsaum
Posted: Thu Jul 13, 2017 8:37 am
by ovenpaa
Let me know how it goes, do you have a Chrono to test with?
Re: 7mm rsaum
Posted: Thu Jul 13, 2017 3:53 pm
by Berger
Yes I've got a chrony.