Granted it is a small sample, and totally unscientific, but my Remington 30-06 is 60-90 fps slower than my Winchester 30-06. Both have 22" barrels. How much slower depends on the exact load, there seems to be a bigger difference the heavier the bullet. With 150's it is usually around 60 fps slower, with 165 or 180s closer to 90 fps.
I compared my Winchester to a buddies Remington 700 in 30-06 and his 165 gr handloads were 130 fps faster in my rifle than his.
And over the years I've ran across a handful of other posts similar to yours where others have observed slower than expected speeds from Remington barrels.
I almost never get the same speeds when comparing my loads in different rifles, 20-30 fps even from the same barrel length seems common and as much as 50 fps not uncommon. More than that is rare, but it does happen.
I don't know for sure, but suspect it has to do with tolerances of the chamber and barrels.
Yes, this is exactly what I'm talking about. I tested the Remington SPS against a non-Remington on the same day with exactly the same loads with 2 different powders and the Remington was down roughly 100 fps with the same barrel lengths. The other rifles's velocity was consistent with Hodgdon data. Other Remington .308 owners have reported similar. My real question is will setting the barrel back and rechambering with a reamer with a normal-length throat probably solve the problem (note also that this chamber gives a huge jump to the lands with a detrimental effect on accuracy), or is this issue more likely to be the bore? If it's the bore then I'm wasting money re-chambering and I really need a new barrel to improve the velocity and bullet jump issues.
