Hornady load date 223
- Thread starter boogz
- Start date
first off thanks for the quick response. second im not to sure to be honest i grabbed these bullets from basspro cause they were the weight i wanted and that all they had in stock. was planning on loading them for a new t3 varmint i bought. second guessing my purchase now. lol
right on , I think the heavier bullets are better suited to the 1/7 and 1/8 twist barrels . For the 1/9 1 /12 twist the 55 and under is probably a better match. But you should wait until someone with more experience chimes in. My buddies rifle , which is a 1/12 twist , does really well with 53g Hornady vmax.
sorry should have specified. my tikka has a 1/8 twist so it should handle the 68 gr bullet just weird i cant find load data specific to this bullet.
i had a peak at their site last night but all they had was a 69gr sierra hpbt. they skip right over the 68gr hornady. i know its splitting hairs but what worries me is the coal not sure if the bullet is that much longer or what. plus im getting a pretty big spread from differnt sites on load from 21gr to 26 gr of varget for bullets in and around 68-70 gr.
boogz
This is just one of the reasons WHY they tell you to start low and work up. I'm not busting your balls but by starting at the suggested "starting" load and working up you will learn a great deal about your load, your cases and primers. And don't forget to measure the base diameter of your cases just above the extractor groove. Anything over .0005 is a sign of excess pressure for "THAT" brand of case because the hardness of the base varies.
Below from a buddy at Accurate Shooter for .223/5.56 cases
"The actual Hardness measurements were (.062"x100kg, Rockwell "B")"
LC 2008 = 96
Lapua 223 Match = 86
Norma 30-06 - 76 (added n Dec -'14)
Winchester 223 = 69
Norma .220 Swift = 64 (added in Dec '14)
Remington "R-P" = 49
This is just one of the reasons WHY they tell you to start low and work up. I'm not busting your balls but by starting at the suggested "starting" load and working up you will learn a great deal about your load, your cases and primers. And don't forget to measure the base diameter of your cases just above the extractor groove. Anything over .0005 is a sign of excess pressure for "THAT" brand of case because the hardness of the base varies.
Below from a buddy at Accurate Shooter for .223/5.56 cases
"The actual Hardness measurements were (.062"x100kg, Rockwell "B")"
LC 2008 = 96
Lapua 223 Match = 86
Norma 30-06 - 76 (added n Dec -'14)
Winchester 223 = 69
Norma .220 Swift = 64 (added in Dec '14)
Remington "R-P" = 49
no balls busted here. to bad i have the softest brass in the lot lol
yeah were the confusion is for me is ive heard it isnt safe to underload a cartridge so im mostly looking for a place to start. or if i should even waste my time with this bullet. as for your .0005 is that case expansion your talking about? nor sure if calipers are that sensitive pretty sure only.005.
yeah thats what i was thinking when i asked data i using manufacturers data makes me feel a bit safer. what confuses me is what are the actual differences between a .223 and a .223 service rifle. is it not safe to use that load in normal 223? as for pics if its not to much trouble id appreciate it might give me a better picture.
boogz
Just average what start load data you have and work up, I have two AR15 rifles and a Savage .223 bolt action with a 1 in 9 twist and the throat is longer than my AR15 rifles. Meaning the Savage can be loaded higher/hotter than my AR15 rifles can.
Again by working up you will learn how to read your primers.
Pressure increases from left to right, the last primer on the right is screaming time to stop and back off the load.
Below a Quickload chart for my AR15 load, max pressure for the .223/5.56 is 55,000 psi and my pressures for my practice ammunition is 50,000 psi and very easy on any make/type of .223/5.56 case.
Your question of case head expansion, .0005 is where you would first see case head expansion "IF" you had a vernier caliper capable of reading that low. Readings of over .001 is where to check and see if this is causing problems like loose primer pockets, and this expansion varies . And as long as you do not load at maximum pressures you have nothing to worry about.
Measuring the Case
by: Germán A. Salazar
http://riflemansjournal.########.com/2010/03/reloading-measuring-case.html
Resizing - Case Dimension Changes
by: Germán A. Salazar
http://riflemansjournal.########.com/2010/06/basics-resizing-case-dimension-changes.html
SIMPLE TRICK FOR MONITORING PRESSURE OF YOUR RIFLE RELOADS
(NOTE as you see at this link below expansion varies with the type case and how hard the brass is and they are ballpark)
http://www.hodgdonreloading.com/reloading-education/tips-and-tricks/simple-trick-monitoring-pressure-your-rifle-reloads
At the Accurate Shooter website many competitive long range shooters will increase the load until the brass flows into the ejector. This lets them know the elastic limits of the brass and they back off one or two grains of powder and then look for the best accuracy near max.
