Tried a search on here but did not find anything. Plenty of noninformative posts on other forums without any specifics. I'm considering trimming down my 24" barrel to 20" for a handier brush gun. Currently with 44.5 gr Varget and 150 E-Tips I am getting right at 2700 fps. Not a screaming fast load by any means. I e read suggestions that in the shorter 20" tubes you should use a faster burning powder. Always considered Varget medium slow in a .308. Curious if anyone has real world experience with Varget and 150-168 grainers out of a 20" tube. With the copper bullets I've come to believe speed is imperative to get them to open up. At 2700 fps and sea level I can maintain 2000 fps out to almost 400 yards, 2600 would keep me under 350 yards. Might not be a huge loss at most of the pig hunting areas I have access to.