Can’t say what’s best , as I’ve only used Forster bushing bump neck die . Around a dozen
barrels across 3 rifles , and I still haven’t actually used my Forster FLS die yet !
A few qualifying comments are needed however . I anneal with an AMP annealer after
every firing , every time . I’m also running quite a mild load , around 39 of H 4350 + or -
0.2 if I swap between 130 AR Hybrid , and 140 Hybrid . I suspect guys running up near
41 are going to see greater case expansion down near the base , and may require use
of the FLS die more often , can’t say for sure .
I have one tight neck .291 flavour , the other 2 are stock .295 no turn with a little extra
freebore for the 140 . I’d also recommend using one die per reamer . I E : don’t use one
die for different rifles with chambers cut with different reamers . You will see more die
wear mixing and matching brass sizing from different chambers .
