6mm br 107 smk bullet

G

greenguy

Guest
I have trouble with loads for sierra 107 mk 27,6 grain N140 powder can
give 1 hole 5 shot group at 100 yards in my rifle but groups are bad at 200 and 300 yards at 200 and 300 yards I have better luck vith berger 105 and
N 150 powder is ther a simple explenation? how can I get 107 mk to shoot
at longer distance my rifle is trued remmy action with kriger 8 tvist 27 inch barrel
 
greenguy,

VV140 seems pretty fast for a 6mmBR with 105-107gr bullets. Is there a reason you're using VV150 with the Bergers but not the SMKs? The most popular powders for your combination would be Varget, RL15 and H4895. From what I read here the order of popularity for those powders varies with region. I'm getting good results with SMKs and Varget.

Greg
 
107 SMK's

Here is my test target for 107 SMK's.

6br_10_shot.jpg


I too found that the 105 Bergers shot better at longer ranges, which is why I built the 6br with 1:8 twist.

6br_500_yards__2_.jpg
 
greenguy said:
I have trouble with loads for sierra 107 mk 27,6 grain N140 powder can
give 1 hole 5 shot group at 100 yards in my rifle but groups are bad at 200 and 300 yards at 200 and 300 yards I have better luck vith berger 105 and
N 150 powder is ther a simple explenation? how can I get 107 mk to shoot
at longer distance my rifle is trued remmy action with kriger 8 tvist 27 inch barrel
Click to expand...

How do you gauge the wind at 300yds? Are you using flags? Not only does accuracy deteriorate with distance but wind and weather effects are exacerbated....

al
 
Hi Greg I used vv140 because It was in the sierra load manual I hawe tried
vv150 maby I try vv540 and norma next.p1 zombie some fine shooting
my best with 105 berger at 550yards is about 3 inches what is your oal
for sierra 107 bullets, I have not been able to find 105 bergers for 6 months
now so I have to use somthing else. AL I am not so good at reading the wind so I normaly shoot long distans in good wheater and no wind
 
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