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I am considering building a 6 CM for PRS comp's next year. What barrel length and twist do you find to be the best for the 6 CM? I plan on starting off with Federal Gold Berger 105's, if they work well, and then moving into reloading later.
I've been really happy with a 26" barrel. Moderate charges will get you into the 3060-3120 velocity range without taking a nasty hit to barrel life, and it's still maneuverable enough for barricade-heavy matches.
I run a few 26" barrels in 6 Creed, mostly M40s and 1 Heavy Palma contour most with 1:7.5tw (1x 1:8tw). Pushing 110s at everything from 2940-3150. Running the slower loads now for less recoil/easier to spot trace.
not to hijack too much but I run a .243 and am about to move to heavy bullets 105-108 bergers. Since these two are very close i'm wondering 1:7 vs 1:8 as well... plan on using a 24" barrel.
not to hijack too much but I run a .243 and am about to move to heavy bullets 105-108 bergers. Since these two are very close i'm wondering 1:7 vs 1:8 as well... plan on using a 24" barrel.
Many 105 hybrids were run over the Applied ballistics doppler this weekend at Altus. Running a 7 twist at 2940 fps I wound up with a .286 G7, that was 100% confirmed down range. The 8 twists I saw were right at .274 and a couple 7.5's both had around 278-279. With a 6x47 7 twist my BC trued to around .288.
Thank you everyone for your input. I ended up going with a Bighorn Origin with a Hawk Hill Heavy Varmint barrel, 26" 1:7.5 twist. I plan on trying out the Berger 105's first and see how it goes from there.
Thank you everyone for your input. I ended up going with a Bighorn Origin with a Hawk Hill Heavy Varmint barrel, 26" 1:7.5 twist. I plan on trying out the Berger 105's first and see how it goes from there.
If you don't like the 105, check the 107smk out. Out of my 7.5tw, I could not shoot a bad group. Very easy to load up. I am almost regretting changing to a 7tw to run the 115DTAC or 110SMK.
If you don't like the 105, check the 107smk out. Out of my 7.5tw, I could not shoot a bad group. Very easy to load up. I am almost regretting changing to a 7tw to run the 115DTAC or 110SMK.
I was looking at the 107SMK's, I have had great success with Berger bullets in the past that way I was starting there first but the 107's would definitely be my next move.