Comments on: Chrony Goodness http://www.pagunblog.com/2007/12/27/chrony-goodness/ The right of the citizens to bear arms in defense of themselves and the State ... Fri, 10 Feb 2012 04:34:26 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: Billll http://www.pagunblog.com/2007/12/27/chrony-goodness/#comment-16826 Billll Sat, 29 Dec 2007 02:29:38 +0000 http://www.snowflakesinhell.com/?p=2261#comment-16826 I don't recall the exact numbers, but I believe I was getting about 2800 fps with very little variation using 52g soft point Hornadays over 26.5g of H335. One thing I noticed early on was that the powder dispenser that came with my Lee reloading press was a lot more accurate with the pistol powder than with the rifle powder. Also the little yellow powder scoop that came with the kit delivers a near-perfect 26g of 335 every time. That and a trickler, and I can weigh every charge. It's slower, but rifle rounds take about twice as long to load as pistol rounds anyway, so the net increase isn't that great. I don’t recall the exact numbers, but I believe I was getting about 2800 fps with very little variation using 52g soft point Hornadays over 26.5g of H335.
One thing I noticed early on was that the powder dispenser that came with my Lee reloading press was a lot more accurate with the pistol powder than with the rifle powder.
Also the little yellow powder scoop that came with the kit delivers a near-perfect 26g of 335 every time. That and a trickler, and I can weigh every charge. It’s slower, but rifle rounds take about twice as long to load as pistol rounds anyway, so the net increase isn’t that great.

]]> By: Sebastian http://www.pagunblog.com/2007/12/27/chrony-goodness/#comment-16796 Sebastian Fri, 28 Dec 2007 05:34:01 +0000 http://www.snowflakesinhell.com/?p=2261#comment-16796 I do appreciate the advice. I'm still new at this. I do appreciate the advice. I’m still new at this.

]]> By: AughtSix http://www.pagunblog.com/2007/12/27/chrony-goodness/#comment-16787 AughtSix Fri, 28 Dec 2007 02:51:07 +0000 http://www.snowflakesinhell.com/?p=2261#comment-16787 "I’m guessing my variability has to do with not precisely measuring each load" Could be. If you're worried about it you could try weighing them out. But, as long as it shoots well, velocity spread (as long as it's not huge) doesn't matter much until you get out past 600 yards--it matters a whole heck of a lot at 1k. Or, some loads are more sensitive than others, even if each charge is measured out. Tweak it up or down a few tenths (or grains even), change your primers, pick a new powder, etc., and you might find one really small. But, again, it's only really necessary for long range. I don't know what my 600 yard load's velocity spread is (but it wasn't particularly small) and it still holds X ring elevation at 600. (A 6" circle--at least when I don't let the post drift up into the black, that can get ugly) One trick is to find a load where the load, the load plus a few tenths, or the load minus a few tents all shoot to the same spot. That way, when you throw your charges, even if it's not right on, it still shoots well. (To do this one, with the .223, start with 19.0, 19.2, 19.4, etc., up to max) Shoot two of each charge at the same target, you're looking for a string where three charges in a row go to the same place. The center of those loads will tend to be more forgiving of charge variation. “I’m guessing my variability has to do with not precisely measuring each load”

Could be. If you’re worried about it you could try weighing them out. But, as long as it shoots well, velocity spread (as long as it’s not huge) doesn’t matter much until you get out past 600 yards–it matters a whole heck of a lot at 1k. Or, some loads are more sensitive than others, even if each charge is measured out. Tweak it up or down a few tenths (or grains even), change your primers, pick a new powder, etc., and you might find one really small. But, again, it’s only really necessary for long range. I don’t know what my 600 yard load’s velocity spread is (but it wasn’t particularly small) and it still holds X ring elevation at 600. (A 6″ circle–at least when I don’t let the post drift up into the black, that can get ugly)

One trick is to find a load where the load, the load plus a few tenths, or the load minus a few tents all shoot to the same spot. That way, when you throw your charges, even if it’s not right on, it still shoots well. (To do this one, with the .223, start with 19.0, 19.2, 19.4, etc., up to max) Shoot two of each charge at the same target, you’re looking for a string where three charges in a row go to the same place. The center of those loads will tend to be more forgiving of charge variation.

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