Thread: Getting ES down with 223

Yep, everything's pretty similar. With those Nosler bullets being quite long, seating them out to 2.350" actually gets them pretty close to the rifling.

I am going to try the nylon brush as per the AMP video you linked to. It'll be interesting to see if it follows that more consistent seating force = more consistent neck tention = any change in ES. That's not something I do currently and it's a cheap experiment. For last night's test, the cases all had the necks wiped out with a rag after sizing and trimming - but maybe the brush will clean more thoroughly? Dunno...

I'll try the following with BM2 and Starline brass:

10rds virgin brass (so clean necks), FL sized, wiped
10rds fireformed brass, FL sized, necks wiped
10rds fireformed brass, FL sized, necks brushed

I'll stick with the GM205M primers, so that I'm not changing too many variables.