wm5l
Well-Known Member
Anyone shooting a 280 AI and IMR8133 with 175s or 180s? The numbers look very fast with a bullet that heavy.
280AI and IMR 8133 with heavys?
- Thread starter wm5l
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huntnidaho
Active Member
- Joined
- Jun 30, 2017
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- 30
I played with this powder in my 7mm rem mag and berger 175s. Hit pressure around 72.5grs @3075fps in a 26" barrel. Best accuracy for me was 70grs @2930fps. ES was pretty decent, 20fps or so in my loads. Seemed to leave lots of powder fouling in my barrel and accuracy would suddenly drop off. I was able to achieve similar performance with both Retumbo (a bit less powder) and RL33 (a bit more powder).
Michael O'Connor
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- Dec 7, 2017
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- 313
The SAAMI 3.340" length might be met better with 168 Grain JLK and RL-26 powder giving a velocity and Ballistic Advantage over slower 180 Grain Bullets. Swampy advertises the G-1 B.C. as .690. I am sorry I don't have any info. on your current bullet selections. It takes quite a bit of powder to get 175-180 grain bullets moving.
