95 SMK optimum velocity
- Thread starter wyo
- Start date
I checked the review but I didn't see where he stated the twist on his 6br. I was just wonderin if a slower twist [ie. 10 twist] might negate the acuracy potential of that bullet if pushed below a certain velocity level? In other words if I'm getting mediocre groups, would increasing the velocity be one of the logical things to experiment with in a 10 twist with this particular bullet? What would you, as a more more experienced shooter/s [I've never shot competitively] advise?
Wyo
Wyo
I shot them in a 10twist 243 Tikka AND my ~8.5 twist Broughton 6BR.
Tikka 243 10 twist at 200yds: 3 shot groups 41.5, 42.0, 42.5 H4350 got around 3075fps and incredible accuracy. All 3 three shot groups were at or under .75" at 200.
10 Twist at 1000yds: I ran the middle load,42.0) at 1000-yds and had to hold in the trees to get on paper due to non-angled scope. I managed to get the last couple shots on paper after figuring out where to hold in the trees and the 3 shots showed minimal vertical,under 2" IIRC) and made perfectly round holes.
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6BR also ran them about 3080 with just under 32gns R15. I worked up a load fairly quickly and shot a 10-shot group at 1000
here:
http://accurateshooter.wordpress.com/2007/09/13/new-6mm-95gr-matchking-more-details/
as you can see, 9 shots were in ~4.5" I am thinking I may have been able to drop the vertical flyers by pointing the meplats...but never tried it.
So, it seems they liked it somewhere between 3050-3100 in my 2 rifles...
HTH,
Jason
p.s. - Sierra has all of the targets from the 10 twist 243...I guess they wanted to make sure their tail was covered and recommend a 9tw.
Tikka 243 10 twist at 200yds: 3 shot groups 41.5, 42.0, 42.5 H4350 got around 3075fps and incredible accuracy. All 3 three shot groups were at or under .75" at 200.
10 Twist at 1000yds: I ran the middle load,42.0) at 1000-yds and had to hold in the trees to get on paper due to non-angled scope. I managed to get the last couple shots on paper after figuring out where to hold in the trees and the 3 shots showed minimal vertical,under 2" IIRC) and made perfectly round holes.
--------------------
6BR also ran them about 3080 with just under 32gns R15. I worked up a load fairly quickly and shot a 10-shot group at 1000
here:
http://accurateshooter.wordpress.com/2007/09/13/new-6mm-95gr-matchking-more-details/
as you can see, 9 shots were in ~4.5" I am thinking I may have been able to drop the vertical flyers by pointing the meplats...but never tried it.
So, it seems they liked it somewhere between 3050-3100 in my 2 rifles...
HTH,
Jason
p.s. - Sierra has all of the targets from the 10 twist 243...I guess they wanted to make sure their tail was covered and recommend a 9tw.
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