That's pretty fat . About .0005 fat actually lol. Could very well CONTRIBUTE to a pressure issue. I would try some different bullets and see where I was. Something is off for sure. A lot of people run the SAUM over 3k with 180s BOOK BE DARNED.
7mm RSAUM questions?
- Thread starter TAZMAN
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I don't suppose someone has a few bullets they would sell me for test purposes or can you buy a few from somewhere? I would seem that would create an issue being a little fat and would also maybe explain the copper fouling a little more.
All I have is 175 eldx. At least would show something. If it jumped 300 fps you would have an idea. Send me a pm I will send 10 free.
eshorebwhntr
Well-Known Member
I don't think it's dangerous or anything but I do think it could show increased pressure in certain setups.
What make barrel do you have? Wondering if its cut or buttoned.
I've also heard that small differences in reamer design have a big effect on pressure, performance, and case life in the SAUM and WSM cartridge families. An example, I had a 6.5x300 SAUM built back in 07-08. Always shot great for me but brass primer pockets would be gone around 4-6 shots with I believe around 55-56gr H1000. Now with the GAP 6.5 SAUM reamer design I can easily get 12+ reloads out of a case running the same velocities at around 60-60.5gr H1000 (+/- 30fps). Same redding FL dies I always used, almost the same freebore. Just a few differences in the reamer design somewhere made a huge difference.
cdherman
Well-Known Member
I have struggled with my Savage 7mm RSAUM some too. Sounds like toddc is helping with a few 175 ELD-X.
I went down to my bench and mic'ed my 180 VLD Hunting slugs. I don't have a really good micrometer, but my dial caliper is good. Shows my bullets at exactly .284
If you are not 1/2 way around the planet, I too would be willing to share the love. I have some Norma 7mm RSAUM brass that are my rejects (sorted by weight out of a 200 lot of brass) Would you like heavy or light rejects? I presume, you would want the light end, for max case capacity. This would at least allow you to verify that your pressure issues are not case related.
PM me if interested.....
I'm still interested in knowing your chamber specs. Saying "It's throated for the 180 Berger" doesn't mean much to me. I have to know the numbers. There are some bullets in the 140-160 gr range that have longer bearing surfaces than a 180 gr Berger. A 175 gr ELD-X is .080" longer.
