I've got a ladder test batch with n560 & fed 210m ready to go.
147gr. Mono's, 18" bbl. suppressed. 1-8t
Medium action.
Any idea what velocity I'd get?
147gr. Mono's, 18" bbl. suppressed. 1-8t
Medium action.
Any idea what velocity I'd get?
7 saum and N560
- Thread starter Levi8599
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Eman1982
Well-Known Member
Waiting for results. I bet it goes 3000+I've got a ladder test batch with n560 & fed 210m ready to go.
147gr. Mono's, 18" bbl. suppressed. 1-8t
Medium action.
Any idea what velocity I'd get?
If it settled in there after barrel speed up & has great accuracy, I'd be happy.
I'm gonna have to load some up in my 7 SAUM. Longtine's N560 load worked like a champ in my 6.5 PRC!
Nice! I use N560 in my 6.5 prc as well and run a 135 Berger 3187 out of 22" proof carbon. It's nice using the same powder for both rifles.
VV site doesn't have data for 7saum, but does have 6.5prc. Using QL 560 and 565 are good fits on capacity and velocity for 7saum and 6.5prc w/ heavy to next to heavy bullets. Having AR's in both w/ mag limit of 2.870" keeps me at 180gr max (few exceptions).
Especially as it's in stock!
Eman1982
Well-Known Member
Where
I start with ammoseek and wikiarms for searching. Usually grafs, brunos, natchez and many other places. 565 has been hit and miss, but 560 is more abundant. 560 has been (lately) in 8#ers more often than 565 and 555. 568 is another possibility in 7saum and 6.5prc as well, but usually compressed charges is needed?
midway usa has several in stock at the time I post this.
Got out today with my 18" 7SAUM Suppressed. Ran a second short ladder in .3 gr increments. N560, Fed 210m, 147gr. Afterburners. Seated .015 OTL, BTO 2.280, OAL 3.076. Ran it up to 66.0 gr. @3068.8fps, got pressure signs there.
Going to drop down & shoot for stable velocity & groups. Then fine tune as needed.
Pretty Pleased with results so far.
Going to drop down & shoot for stable velocity & groups. Then fine tune as needed.
Pretty Pleased with results so far.
