Kampfeld Custom is where you need to go for chop and flute. Karl’s work is legendary and his prices are reasonable.

IMO you’ll be glad you did, as those 24” barrels are too heavy. They used the same contour for .458 and .416. Of course the .375 ended up with more metal and barrel weight than the bigger bores.

Chop and flute won’t affect the forearm fit. My 21” fluted gun handles much better now.

DF