gbal Posted November 7, 2013 Report Share Posted November 7, 2013 I will see how well it/me does at the RRC shoot with once fired f/l sized cases. with the n165 load according to my app the bullet is still doing 1290fps at 1250yds. so plenty to keep it stable. If I still have the urge to play after that I may try H100v or h4350. currently my .243ai out performs my .260! and the idea of the .260 is to be better than the .243 hence I got a 30" Tube fitted ! who said rifle and reloading was fun?!?! Hmmm...I suppose with 100g bullets,the 260 might have..say 100-150 or so fps advantage over the 243,but that could well be wiped out with a good AI 243.....one real issue is that no-one ever measures pressures -and factory loads,even if available might be under SAAMI specs a tad.....or varyingly so. If "better' really means faster-and that is only one component of 'better',at best-then the comparison is a bit compromised by a very limited overlap of bullets weights-and of course other variables,like barrel length,as you note.And individual rifles ,and.... There won't be an awful lot in it..... Take comfort-as Einstein said on a grander scale, "Rafiniert ist Herr Gott,aber Boschaft ist er nicht" -approx,more clearly perhaps: God may have had to make the world complex,but he has not deliberately made it bloody mindedly complex The thought helps keep me going when the going gets perplexing.There is a reason,a good objective one-I just don't know what it is yet! Gbal Link to comment Share on other sites More sharing options...
mildot Posted November 7, 2013 Author Report Share Posted November 7, 2013 my .243ai throw a 105gr pill at 3150fps from a 24" tube! it is more accurate than the .260 with a 30" tube! which means that it has less drop and less drift out to 1k.... well until I play more with the .260. Trouble is theres far too many variables. Link to comment Share on other sites More sharing options...
gbal Posted November 8, 2013 Report Share Posted November 8, 2013 my .243ai throw a 105gr pill at 3150fps from a 24" tube! it is more accurate than the .260 with a 30" tube! which means that it has less drop and less drift out to 1k.... well until I play more with the .260. Trouble is theres far too many variables. As Einstein noted. It helps a little to compare apples with apples. Barrel length won't affect "accuracy"-or 'precision'=group size,basically Some barrels externally the same and same chambering are just more accurate than others Speed does not have much consistent effect on precision-though the best node is not typically at the max velocity 'precision' will have an effecton the spread of shot at 1000,but not a simple 'more drift/drop'-say one rifle is grouping .4 moa another .7moa -the some load-the increase in group size is about 3 inches,from that factor. Drop and drift are functions of BC-and velocity,but it's a bit misleading to blame them on 'accuracy' differences. As you say,it's complicated enough,without muddying the waters! That said,'load development' can become a bit over compulsive,at the expense of wind reading practice-which of course,has to be at the shooting distance,so is not so easily available as changing powders ,but is the more critical skill!-by a lot more than 3 inches!! Still,it's all a challenge,and they are still making barrels gbal Link to comment Share on other sites More sharing options...
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