6 BRA 100y testing

[6MMsteve]

I definitely will! Thank you for the advice. I must have a pretty slow lot of H4895 or it's just degraded some over the last 20 years. I want to say this can of H4895 cane from an auction, it was sealed, but you never know how it was stored. My reloading room is in the house which is at 68-70 degrees year round. Still smelled and looked ok though when I cracked it open last year for a few test rounds out of my 223. But definitely seems to be slow because I'm not seeing anyone else using 31.8g of H4895 with a 108g bullet and still only getting 2950fps.

we use to dry 7828 to get more velocity and it worked well, that's been mid 80's I done forgot what all we done but everything worked..shooting 1000yds..dry by weight then my brother had a formula he used I have no clue about it I just shot

 

[BuffaloBill]

Others have already questioned if the scope is to blame. I mention it also, only because I spun my wheels for a lengthy time, trying to get one 6Creedmoor to shoot. 100yd groups were 1/2-3/4”. In the end I tried a scope from another rifle and the first group was one slightly enlarged hole. It was a Golden Eagle. The mfg checked it out and found nothing wrong. That scope was later replaced with a new one. But I have not tried it yet.

 

[kyotekiller25]

Are you running .001 tension by chance? I’ve seen the tolerance stack cause a lot of trouble doing that. You end up with half a thou or less and they don’t act right.

I’m not leaving mad by any means… just kinda out of suggestions. If a BR variant likes a powder and bullet (and it’s rare they don’t) everything shoots .2s or better with a good scope/reliable ignition. You’re just going to have to figure out which part isn’t clicking.

I am running 4 thou neck tension at the moment as a few guys have said that H4895 likes a little more neck tension. I have 2 other bushings that will give me 3 and 5 thou to mess with later.

I think it's just more due to being course load development so far. I'll get there, just need a little more time and patience to work it all out. I wish it was shooting in .2s with little to no load development, however this one just isn't.

Could be this old lot of H4895, could be the bullet, could be the seating depth, could be the tension, could be the scope, etc. Could be any number of things really. Going to get a new jug of H4895, going to try some Barts 103g Daggers with the new jug of H4895, got a new scope put on.

Think I'm just gonna work around the 30-30.5g area at 2800-2850fps with the remainder of this can of H4895. Then do a seating depth test and come back off the lands more. Should tighten things up hopefully, then I can play with some neck tension.