Berrys 220's

[Hdjake73]

Anybody have a ballpark with 300 blk on berrys 220's (or 220's in general) over accurate 1680 out of a 8.5 inch barrel?

 

[Bullet Splatter]

11.8 of 1680 was giving me 1000fps with an 8” barrel and the berrys 220. Roughly the same with the 220smk’s iirc. I would start in the low 12s and work down.

 

[Hdjake73]

11.8 of 1680 was giving me 1000fps with an 8” barrel and the berrys 220. Roughly the same with the 220smk’s iirc. I would start in the low 12s and work down.

Thanks, what's your coal?

 

[Bowhntr6pt]

AA1680 was louder than AA #9.

1030ish FPS with a YHM can and a 8.5" barrel is very quiet. Quiet enough to get multiple kills before the pack figures it out. These were 220gr SMK's I believe.

 

[Hdjake73]

AA1680 was louder than AA #9.

1030ish FPS with a YHM can and a 8.5" barrel is very quiet. Quiet enough to get multiple kills before the pack figures it out. These were 220gr SMK's I believe.

Man that looks like a good time

 

[Bullet Splatter]

Thanks, what's your coal?

I would have to look it up to be certain, but berrys list it at 2.15. I’m sure it was around there.

 

[Daezee]

220gr Sierra Match Kings, 2.2" oal, 3' from chronograph, temperature 70-80 degrees, Wolf KBV223M primers (similar to CCI 41's)
Bought a bunch of pulled 220gr SMK years ago and shoot about half subsonic Blackout and half supersonic .308. Yes, the 10.5" and 10.3" bbls are two different ones, not a typo. My loads are accurate in the bbls I shoot them out of. Have killed lots of hogs in traps with them suppressed subsonic, but you gotta do a central nervous system hit...NO expansion.

12.0gr AA1680:
10.5" bbl = 942fps average
16" bbl = 1136fps average

12.1gr AA1680:
10.3" bbl = 1026fps average