Posted by Stuart Pethy on May 17, 2020; 8:12am
URL: http://oldforum.flyshooter.com.au/Which-Bullets-and-Primers-are-best-tp5710759p5710813.html

hey Dave
like Peter has said every barrel is different and it will tell you what it likes
the few 6BR barrels i had i tired 105gr hunting vlds, 105gr hybrids, 108gr berger BT and 107gr SMK and 103gr CH
in 6BR 2208 will be ya best bet and between 29.5gr to 30.5gr will be a load in there on about 95% cases
my 1st barrel in 6BR was a krieger and i shot 105gr hunting vlds in it with 30.6gr of 2208 at 2930fps (it was an awesome barrel and was quick), the 105gr vlds you need to keep them in the sweet spot alot more for seating depth

my next barrel was a hart barrel which i was using 29.8gr or 2208 and it was doing 2840fps with 105gr hybrids ,, i tried 108gr bergers and 105gr vlds and hybrids won but over all i didn't like the hart barrel it just didn't shoot as good

 all my new barrels now i like to try a few different bullets before settling on one as some just shoot better with one type

eg my 1st 6BRX liked 105gr hybrids and 2208, honestly i used BR4 and CCI 450s and once each was tuned for it i didn't see much difference  but now use 450s
next barrel liked 107gr SMK and 2208
next barrel i wanted to try using 2209 in the 6BRX as i heard good things about in in them and dasher (wouldn't use it in 6BR), i tried 105gr hybrids and 107gr SMK with both 2208 and 2209 and there wasnt much in them but 105gr hybrids and 2209 won but only by slightest margin...

i just picked up my new 6BRX barrel from Dave Kerr and i'm trying a krieger 5R barrel for the 1st time in my brand new 6BRX reamer with 150FB, i have 100 cases which i have hydroformed (make that 98 as i lost 2 which is normal)
now same as in 6BR when i fireform my cases to my barrel i use this time to do some quick load testing with different powder and projectiles to see what the gun likes, once cases have been once fires in chamber from your quick testing results i pick what works and then start serious tuning

BTW people cleavers have a special on atm for 107gr SMK $225/500 box, cheap as chips

im waiting for berger 109gr hybrids to come into Australia as i want to try them as ive heard good things about them