Hey all I'm loading 223 with 80gr bullets and the book says 2.550" coal. I loaded and tested this coal over 26grs varget and it shot well no problems however I dropped my caliper and it broke so I replaced it. Set it to 2.550" and noticed my new loads are longer. My already loaded rounds come out to 2.450". They seemed fine when I was shooting them the other day. Could this .10" COAL hurt anything?
results of a crappy caliper
- Thread starter brybenn
- Start date
ultimate_monkey
CGN Ultra frequent flyer
- Location
- victoria BC
Only if ifs 10thou over and jamming into the lands causing a pressure spike , 26gns under an 80gn bullets seems to be a hot load
26 gr of Varget with 80 gr SMK's is on the hot side but it works (it's the load I gave him)
OAL is a piss poor way to measure ammo unless you need to load from the mag.
Brybenn,
Distance from the base of the cartridge to the ogive is a much better way to measure. We can go over that at the range tomorrow.
OAL is a piss poor way to measure ammo unless you need to load from the mag.
Brybenn,
Distance from the base of the cartridge to the ogive is a much better way to measure. We can go over that at the range tomorrow.
I recently came into possession of three different sets of calipres. All were made in China.
All three measure differently at any given distance.
If I set them with a 1 inch standard after setting them with a 3 inch standard, they all need to have their zeros reset at each length. The reset is only afew thou but if you're turning out something on a lathe that requires close tolerances, the results can be underwhelming to say the least.
IMHO, I wouldn't rely on a cheap precision device, unless it was for a purpose that real precision isn't really necessary.
On the other hand, I have an old NSK manual, non dial indicator vernier that are now sneered at, that you can set guages by. It's extremely accurate but can be a bit of a bear to read with aging eyes.
Pay the extra dollar and go for Mitutoyos or Starrets, maybe even a few others. The crap that's sold at Princess Auto is just that, crap.
By the way, you just dropped your calipres, I threw mine onto a concrete floor, so that no one else would try to fish it out of the garbage and try to put it to use.
All three measure differently at any given distance.
If I set them with a 1 inch standard after setting them with a 3 inch standard, they all need to have their zeros reset at each length. The reset is only afew thou but if you're turning out something on a lathe that requires close tolerances, the results can be underwhelming to say the least.
IMHO, I wouldn't rely on a cheap precision device, unless it was for a purpose that real precision isn't really necessary.
On the other hand, I have an old NSK manual, non dial indicator vernier that are now sneered at, that you can set guages by. It's extremely accurate but can be a bit of a bear to read with aging eyes.
Pay the extra dollar and go for Mitutoyos or Starrets, maybe even a few others. The crap that's sold at Princess Auto is just that, crap.
By the way, you just dropped your calipres, I threw mine onto a concrete floor, so that no one else would try to fish it out of the garbage and try to put it to use.
Keep in mind that if you have one set of calipers, it likely doesn't matter how accurate it really is, so long as it is relatively precise. If the true distance is 3.000", and your calipers read it as 2.985", so long as every time you measure it still reads 2.985", then probably everything will work out right.
