22BR Primer

[dstoenner]

I am planning on changing to a 22 BR 1:7 twist so I can shoot 85.5 or 90 Atip in F-Open. This is replacing my 6x47L that I have been using these last 3 years. I already have a 6BR and use CCI BR-4 with good effect. However when I went to 6X47L BR-4's didn't work for me so I went to CCI 450's Perfect Match.

My question is, what are you guys using? I am thinking of sticking with H4350 and RL-16 compared to using Varget on 6BR. I am thinking slower powder on a big column, go with 450's.

Any thoughts? Best practices?

Thanks in Advance

David

 

[xswanted]

I ran 450s and 7 1/2s in mine with slow powders.

Both were quite accurate.

 

[padom]

450's here and I changed from a 7 twist on my first 22BR to 7.5 twist.. loads and groups got wayyy more consistent going to 7.5 twist. Running 85.5, 88 eld and 90smk at 3030 out of a 28" the 7 twist had me at 312,000rpm... going to a 7.5 twist dropped my rpm down to 290,000 rpm and my groups got way more consistent.. no more unexplained fliers, much easier load development with the 85-90gr bullets

I use 4166, varget and N550

 

[dstoenner]

450's here and I changed from a 7 twist on my first 22BR to 7.5 twist.. loads and groups got wayyy more consistent going to 7.5 twist. Running 85.5, 88 eld and 90smk at 3030 out of a 28" the 7 twist had me at 312,000rpm... going to a 7.5 twist dropped my rpm down to 290,000 rpm and my groups got way more consistent.. no more unexplained fliers, much easier load development with the 85-90gr bullets

I use 4166, varget and N550

I already have my barrel and it is 1:7. I’ll take that into account if i get another barrel.

What kind of barrel life are you getting? I am thinking a little over 2k because of fast twist.

 

[padom]

I already have my barrel and it is 1:7. I’ll take that into account if i get another barrel.

What kind of barrel life are you getting? I am thinking a little over 2k because of fast twist.

I got ya.. for what it's worth, the 7 twist shot the 88 eld well with no development and 4166....and the 80 VLD and 80smk into.tiny groups...

I don't shoot PRS or lots of rounds in a string...and I'm getting 2250-2500+

 

[urbanrifleman]

If you have a 7twist you will want to shoot it about 2850ish max.