270 fast twist rebarrel
- Thread starter Jpron
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Muddyboots
Well-Known Member
As @helsyeah mentioned, I built 700LA, 1:8tw, 27", Light Palma contour, 5R, 0.290 freebore added. The 700LA gives me 3.65" total magazine COAL which allows seating the 156HH out to 3.63 with 3 baring bands in neck and still be 0.020 off lands. The 156HH with RL26 (yes it is pixie dust in .270!) topped out close to 3300 and my settled in load is 3200. This shoots sub 1/2 MOA and killed my Avatar buck this year. This rifle also shoots 170 EOL close to 3100 with RL26 but settled at 3050 as best load so far, still need more work on it though. I plan on trying the new 148HH just to see what it will do. There are some additional bullet loads associated with this build as well in threads.
Added info: 210FM, Sig Sauer brass
Added info: 210FM, Sig Sauer brass
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It would be helpful if you specify which bullet?
I'd start with the badlands 140 gr and the hammer 156, followed by the 150 ablr, and if needed 170 gr Berger
I shoot 175 Matrix VLDs at 2993 FPS (reached near 3100 FPS but group owned up and did not care for pressure signs) with H4831SC; RL-26 yields an additional 100 FPS.
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My 1-8 McGowen comes in Wednesday. Build starts this week.
Western4444
Well-Known Member
I have both a 270 WSM with a 7 1/2 twist barrel, standard saami specification. No additional freebore. And have a 6.8 Western With 7 1/2 twist as well. Primary bullets: 165 Nosler ABLR, 170 Berger Elite and 175 Sierra TGK using H4831sc powder. Their accuracy about the same, have been shooting them at 600 and 1000 yards. The 6.8 is a little more efficient, little less powder needed. Running the bullets about 3000 fps for best accuracy. One inch groups for the 165 Nosler at 200 yards and about inch and half for the 175 Sierra. Best so far with the 170 Berger is a three inch group. Still working on that load. Use Hodgdon information for reloading data. Should add, the 150 Nosler ABLR is not shooting as well as I thought it would 3" groups at 200 yards.
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Would you care to share what components your using and what bullets your gonna try? Thanks
McGowen #3 stainless
Weatherby vanguard action
McMillan edge hunter
270 Peterson brass
170 Berger
165 accubond lr
160 partitions
