So, harvard today was little to no fun, all ranges are covered with solid ice and when it started to melt i was barely able to drive out in my p-car. so did not do any work at 300yds, only ran those load tests of my .308 at a 100yds.
it is a rather mediocre barrel - an 18" wilson combat fluted, but, i got to say - results kinda on par with what i saw in .223. projectile used was hornady 168gr ELD match.
nothing of cfe223 looks acceptable at all - whole upper raw is cfe223. surprising results - like groups 6 and 7 with good SD but abysmal spreads. go figure.
second raw 9 to 13 are TAC loads. there is seems to be more usable groups - like 9 and 13, perhaps. it felt better when speed was getting around 2630fps. good thing is that TAC was dropping pretty well with minimal issues from my dillon powder measure, so, it will be for now my .308 load - a 44gr TAC, and i will try to play around it a bit to see if minor adjustments would improve anything.
group 15 was a test of how my precision 6.5CM loads for bergara would fire from my 6.5CM AR10 - 20" aero precision barrel. as it can be seen - pretty adequate.
it was 5 rounds and i flinched bad on a last one, but before i did shoot more into blank space under targets row to adjust the scope and it did group in a same way as those 4 inside the target - pretty decent. much more pleasurable to shoot than .308. i mostly only wanted to set the scope on AR to match new loads, and it worked out just fine. speed comparison - 2660fps out of AR10 20", 2800fps out of 24" bergara.
here below is a small re-test of how merely a 0.1gr difference of the powder drop affects the .223 groupings - varget, 25.3, 25.1, 25.2 loads, on a same 69gr SMK. sets of 10.
it was not my best shooting day, so i do not know how much of the spread are loads and how much me, but it is indicative enough for what it is. with proper concentration i was getting all 10 rounds inside of the 1" circle there. wind was 7mph today with gusts to 12 - at 100yds should not been much of an effect from that.
i usually load 25.1 - 25gr and scope is set for that load, as it can be seen.
PS. Also, to my next surprise - the target there is not a 1" circle, the inner white area diameter is 15mm, from thick black line edges. i was pretty sure it was supposed to be an inch but it is smaller. outside edge of thick line is 7/8". may be my printer is scaling the target. hmm.
it is a rather mediocre barrel - an 18" wilson combat fluted, but, i got to say - results kinda on par with what i saw in .223. projectile used was hornady 168gr ELD match.
nothing of cfe223 looks acceptable at all - whole upper raw is cfe223. surprising results - like groups 6 and 7 with good SD but abysmal spreads. go figure.
second raw 9 to 13 are TAC loads. there is seems to be more usable groups - like 9 and 13, perhaps. it felt better when speed was getting around 2630fps. good thing is that TAC was dropping pretty well with minimal issues from my dillon powder measure, so, it will be for now my .308 load - a 44gr TAC, and i will try to play around it a bit to see if minor adjustments would improve anything.
group 15 was a test of how my precision 6.5CM loads for bergara would fire from my 6.5CM AR10 - 20" aero precision barrel. as it can be seen - pretty adequate.
it was 5 rounds and i flinched bad on a last one, but before i did shoot more into blank space under targets row to adjust the scope and it did group in a same way as those 4 inside the target - pretty decent. much more pleasurable to shoot than .308. i mostly only wanted to set the scope on AR to match new loads, and it worked out just fine. speed comparison - 2660fps out of AR10 20", 2800fps out of 24" bergara.
here below is a small re-test of how merely a 0.1gr difference of the powder drop affects the .223 groupings - varget, 25.3, 25.1, 25.2 loads, on a same 69gr SMK. sets of 10.
it was not my best shooting day, so i do not know how much of the spread are loads and how much me, but it is indicative enough for what it is. with proper concentration i was getting all 10 rounds inside of the 1" circle there. wind was 7mph today with gusts to 12 - at 100yds should not been much of an effect from that.
i usually load 25.1 - 25gr and scope is set for that load, as it can be seen.
PS. Also, to my next surprise - the target there is not a 1" circle, the inner white area diameter is 15mm, from thick black line edges. i was pretty sure it was supposed to be an inch but it is smaller. outside edge of thick line is 7/8". may be my printer is scaling the target. hmm.
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