SmallCaliberCentral

Has anyone noticed the best fill ratio, if any, for their reloads. I'm particularly interested in RL 10x and Benchmark. Since I began checking what worked best for me, it seems to be around 88% using 10x. In order to get the same velocity with Benchmark, I'm in the 96% range. I'm trying to determine if it's the powder or the fill ratio that's making the difference. I'll be doing some further testing with Benchmark when the wind dies down a bit.

Quoddy..........I'm using H-4895/ 27.0 in my 3 rifles chambered in 204 ruger. 2 custom Rem 700 and a factory ruger varmint #1. Winchester brass gives about 103% with 39 Sierra seated to an OAL of 2.325
Later
Ray P

using 39 SBK's and 26.5 gr of rl10x fills it just about right .2.300 oal 1.938 ogive