Dicky das Posted May 13, 2015 Report Share Posted May 13, 2015 Hi all just after abit of advice for my father inlaw he has just got a cz 527 223 1 in 12 twist he is reloading 55 grn hornaday bt and using reloader 10x powder with federal primers he has loaded from 20.5 to 24.5 the best being 21.7 and that was an inc group at 100 yrd any help would be much appreciated thanks das Quote Link to comment Share on other sites More sharing options...
robbiep Posted May 13, 2015 Report Share Posted May 13, 2015 Where did he get the data for building that load from ? The reason I ask is that 24.5 looks WAY too high. Alliant say that the MAX should be 23.0 with a 55 grain speer bullet. If it groups well at 21.7, then stick with that. Quote Link to comment Share on other sites More sharing options...
pork chop Posted May 14, 2015 Report Share Posted May 14, 2015 reloading manuals are on the low side i find.so long as you work up and look for signs of over pressure you will be fine.what i tend to do is find a powder load the rifle / bullet likes then work on col to fine tune,works for me Quote Link to comment Share on other sites More sharing options...
Bewsher500 Posted May 14, 2015 Report Share Posted May 14, 2015 Sounds like you have found a decent accuracy node depending on the accuracy of the scales you could tweak either side of that charge in smaller increments or skip straight to COL development using your initial length load small lots of differing seating depth up and down from where you are now. doesn't matter how you measure them or how close or far from "the lands" you are so long as you can accurately repeat THAT length when you find the most accurate reloading manuals are on the low side i find.so long as you work up and look for signs of over pressure you will be fine.what i tend to do is find a powder load the rifle / bullet likes then work on col to fine tune,works for me This should be stamped into the front cover of EVERY reloading manual!! They are a Guide you may hit pressure well below or well above the GUIDE Quote Link to comment Share on other sites More sharing options...
Dicky das Posted May 14, 2015 Author Report Share Posted May 14, 2015 Thanks all its just this is all new to him wasn't sure of what size of groups to be excepting at 100 yards Quote Link to comment Share on other sites More sharing options...
robbiep Posted May 14, 2015 Report Share Posted May 14, 2015 Inch group is absolutely fine, unless he's wanting to get into finesse target shooting. I'll put it this way. To pass DSC you are expected to be able to put 3 rounds into a 100mm (4") circle at 100 metres. Quote Link to comment Share on other sites More sharing options...
team tractor Posted May 14, 2015 Report Share Posted May 14, 2015 Inch group is absolutely fine, unless he's wanting to get into finesse target shooting. I'll put it this way. To pass DSC you are expected to be able to put 3 rounds into a 100mm (4") circle at 100 metres. That's terrible Quote Link to comment Share on other sites More sharing options...
Bewsher500 Posted May 15, 2015 Report Share Posted May 15, 2015 you would be surprised how many fail! Quote Link to comment Share on other sites More sharing options...
linny Posted May 15, 2015 Report Share Posted May 15, 2015 you would be surprised how many fail! yes i bet you are right Quote Link to comment Share on other sites More sharing options...
robbiep Posted May 15, 2015 Report Share Posted May 15, 2015 That's terrible It is a bit of a joke, isn't it Quote Link to comment Share on other sites More sharing options...
welshwarrior Posted May 15, 2015 Report Share Posted May 15, 2015 (edited) That's terribleBut with a bit of pressure and nerves a rifle that only shoot 1" groups at 100m an 1" high you start to see where the fails come in. I did the test a couple of months ago and had to zero a guys rifle for him so he could pass. Edited May 15, 2015 by welshwarrior Quote Link to comment Share on other sites More sharing options...
Dougy Posted May 15, 2015 Report Share Posted May 15, 2015 When I did my DSC one chap couldn't get in tbe same field. 1 inch at 100 could be acceptable , if it will get smaller with a little more fettling I would try for sure. Quote Link to comment Share on other sites More sharing options...
robbiep Posted May 15, 2015 Report Share Posted May 15, 2015 The problem is, you can end up chasing your own tail. Do you try a different bullet (weight, manufacturer, type), primers, brass, seating depths ... the list is endless. And you can bet that as soon as it's finally perfect, there will be a massive lack of your chosen powder, and you'll have to start all over again. Myself, I do a bit of paper punching, but it's more as practice for foxing, as that is the real purpose of my 223. It is setup so that I'm 1" high at 100 metres, and I'm within that 1" high/low from 50 metres out to 190 metres. Quote Link to comment Share on other sites More sharing options...
Bewsher500 Posted May 15, 2015 Report Share Posted May 15, 2015 . It is setup so that I'm 1" high at 100 metres, and I'm within that 1" high/low from 50 metres out to 190 metres. you should never be low with a "1" high at 100" you are effectively zeroing at 200yds, not 1" low until past that (around 220yds) Quote Link to comment Share on other sites More sharing options...
robbiep Posted May 15, 2015 Report Share Posted May 15, 2015 you should never be low with a "1" high at 100" you are effectively zeroing at 200yds, not 1" low until past that (around 220yds) I run a slightly slow load, as it definitely gives a 'sweet spot' in my 223rem : 25.0 grains of H4895 pushing a 52 grain Amax (for target) or 53 grain Vmax (fox). Only 3100fps MV on the chrono. As such, I'm 1" high at 100 metres, dead on at 150-ish, and dropping to 1" low by 190. By the time it gets to 300 metres, somewhere round 6" low. Quote Link to comment Share on other sites More sharing options...
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