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Finally some success with 40 gr VMaxs!
Posted: Sun Mar 25, 2012 3:09 pm
by inKYfromSD
Not quite as good as the 39 SBK but I think they're getting closer. Five shot groups @ 100 yds, crosswind gusting to 12 mph, bipod & rear bag, prone. 27.4 and 27.5 grains of IMR4895, Rem 7 1/2, Win brass, 2.28" COAL. Not sure which one to go with. 27.4 is kind of spread out but 27.5 has some stringing (low-left was me). Might have to load 10 more of each and try it again on a calm day.
Re: Finally some success with 40 gr VMaxs!
Posted: Sun Mar 25, 2012 8:59 pm
by Sth Oz Dan
Some nice groups!
Was your P.O.A. same for both? P.O.I. seems off for such a small change in charge
Re: Finally some success with 40 gr VMaxs!
Posted: Sun Mar 25, 2012 11:32 pm
by 247sniper
Good stuff fellas, I have some vmax to try (40) but I am getting on so well with the 39sbk's I feel hard even thinking on trying anything else !
Where do you get that target from guys I can remember ?
Steve.
Re: Finally some success with 40 gr VMaxs!
Posted: Sun Mar 25, 2012 11:34 pm
by 247sniper
Good stuff fellas, I have some vmax to try (40) but I am getting on so well with the 39sbk's I feel hard even thinking on trying anything else !
Where do you get that target from guys I can remember ?
Steve.
Re: Finally some success with 40 gr VMaxs!
Posted: Mon Mar 26, 2012 7:46 am
by inKYfromSD
Dan, POA was the same. I agree with you, for a .1 grain change. I was taking turns shooting the .204, my .300 win mag for my Alaska trip, and a 10/22 that I am customzing. Lot's of moving around and significant caliber changes. The wind may have been less for the last group as well. And my technique probably could use a lot of refinement.
247: If I hadn't purchased 500 of the Vmaxs on sale, all I'd shoot would be the 39 SBK (minute-of-golf ball at 200 yards!). The target is from Practical Riflery forum, the OCW method. There's a .pdf there. The target I posted has the center diamond printed in orange. I printed a bunch of them with the orange removed and color it in with a flourescent yellow highlighter. Man do those stick out in sunlight, especially early and late. Print them on "cover stock" and they're fantastic for load development.
Re: Finally some success with 40 gr VMaxs!
Posted: Tue Mar 27, 2012 2:02 am
by Sth Oz Dan
Wind could do it - agreed.
Whenever I have testing to do, I try to stick with part of the OCW technique - firing one of each different variation in a round robin - reduce technique and weather variables. But this might be expanding MY groups a little?
might have to review my test method again and fine tune the routine.
Good luck with them 40s anyway mate - looking good