I have been doing this on several VLD's and SMK's. I have not seen any noticeable increase in BC, MAYBE 1/4 to 1/2 moa at 1,000 yds.
BUT it has decreased my vertical spread by about 50%. I shoot F-Class with both 6.5X284 and 30X8mm Rem Mag, in the 6.5 I shoot 140gr Berger VLD,s when I started Meplat trimming and counter sinking and then pointing, my vertical spread at 1,000 yds went from about 8 to 9 inches to less than 4. I got the same result from the 30 cal with the 210 gr Berger LRBT.
I have also started doing the same on two of my hunting rifles, a 240 Gibbs with 115 gr Bergers and my 7mm AM with 175 SMK and 200 gr WC. What I learned on paper with the F-class rifles convinced me it was worth the time and effort on the hunting bullets as well, especially when you consider that I will put less rounds through both hunting rifles in a year than I will put through one F-class rifle in ONE week-end.