Armory Sponsor
Posted: 4/20/2013 9:07:59 PM EDT
|
So I know you need to reduce the max load with different components by 10% for safety and work you way up to max load. This puts me in a predicament. I recently loaded 80 round of .223 with 36 grn. varmint greanades. Now barnes max load is 29.5 grains of TAC, if you reduce that by 10% you get 26.5 grns. The problem I run into is that they recommend a minimum charge of 27.5 grns. Is it safe to use my 10% reduced load which is 1 grain less than barnes recommended minimum load, or should I start at their minimum load? An added note, I have already made 80 rounds like this, should I pull the bullets and load to their minimum?
ETA: Drunk edited for drunk spelling.  And no, I didn't load the rounds when I was drunk.
|
|
The 10% rule is a general thing and mostly applies to data that only lists the max load. If you have data that lists the start and max load generally you would not go below the start data.
However, most powders will tolerate some amount of undercharging. My advice is you contact either the powder manufacture and or the bullet manufacture and get their input on your situation. |
|
Quoted:
The 10% rule is a general thing and mostly applies to data that only lists the max load. If you have data that lists the start and max load generally you would not go below the start data. However, most powders will tolerate some amount of undercharging. My advice is you contact either the powder manufacture and or the bullet manufacture and get their input on your situation. ^^^^ This ^^^^ If there is No start charge do the 10% thing, if there is, use it. |
|
Quoted:
For rifle rounds, I generally start 2 grains under minimum for NATO calibers, and 1 grain under the minimum for commercial brass. If by "NATO Calibers" you mean the 223/5.56 then you have that back-aswards as most 5.56 brass has the same or more case capacity then commercial brass. |
|
Quoted:
For rifle rounds, I generally start 2 grains under minimum for NATO calibers, and 1 grain under the minimum for commercial brass. Why would you start UNDER minimum. That does not make any sense and with some powders, has the possibility of being dangerous. The danger is mostly with ball powder in pistol calibers but still exists in rifle too. I have seen pressure dented cases at least a few times in the past couple years alone posted on reloading forums that were caused by going under the "start" load. I will post some photos later. EDIT: Started new thread with pressure dents. 
|
|
Quoted: Quoted: The 10% rule is a general thing and mostly applies to data that only lists the max load. If you have data that lists the start and max load generally you would not go below the start data. However, most powders will tolerate some amount of undercharging. My advice is you contact either the powder manufacture and or the bullet manufacture and get their input on your situation. ^^^^ This ^^^^ If there is No start charge do the 10% thing, if there is, use it. +2, good advice. |
| Thanks for the info guys. I will just pull the bullets and reload to the minimum. I didn't even think about starting at the minimum load, I just took 10% off the max and started making rounds. I guess I will have to do the math and double check the minimum next time. |
|
Quoted:
Thanks for the info guys. I will just pull the bullets and reload to the minimum. I didn't even think about starting at the minimum load, I just took 10% off the max and started making rounds. I guess I will have to do the math and double check the minimum next time. You should never make a shit ton of rounds (80) without small batch testing. Load 3-5 and test. Increase powder charge, load 3-5 rounds and test. Work your way up to Max looking for an accuracy node, feeding and function and desired velocity. |
Armory Sponsor