coloradokevin
Member
- Joined
- Mar 22, 2008
- Messages
- 3,285
Well, with the helpful advice from everyone here, I've finally loaded up a few test pieces!
Interesting results, which have taught me a couple of things:
1) Either I am dumber than I thought and just built bunch of little bombs for my gun, or my fears of "double charging" are moot in some powder/brass combinations. I'm using H4895 and at 25grains it filled each cartridge to the shoulder... Sure couldn't fit a double charge in that case!
2) I still don't seem to fully grasp why things come out the way they do... I used a piece of factory loaded ammo as a basis for comparision, and set my bullet seating die up. My finished product came out to 2.194 inches COAL, which my books show as being within SAAMI specs (between 2.165 and 2.26"). But, two of my first ten cartridges came out at 2.190 and 2.189 inches, for a variation of .004" and .005" from the standard measurement.
I'm just building plinking ammo for the moment, so I'm not really too concerned with this variation for that purpose. However, as I try to improve my ammo for other purposes, I'd like the COAL to be the same. Any idea why this might have occured? I took new Winchester .223 brass, resized it, trimmed to 1.751", chamfered and debured the case mouth, then threw in a primer, powder, and bullet. What would lead to a length variation? Is it cheap bullets (I'm using bulk no-name brand bullets)? Or did I do something else I shouldn't have?
Of course, it is entirely possible that I am being too anal on this!!! I just measured a strand of my hair with the calipers, and that reads as .003 inches! So, we really aren't talking about a heck of a lot of variation here... But, you guys are my experts on precision, so what do you think?
Anyway, I'm still happy to have completed the process to some functional degree... Here is my first ten of fifty rounds:
Interesting results, which have taught me a couple of things:
1) Either I am dumber than I thought and just built bunch of little bombs for my gun, or my fears of "double charging" are moot in some powder/brass combinations. I'm using H4895 and at 25grains it filled each cartridge to the shoulder... Sure couldn't fit a double charge in that case!
2) I still don't seem to fully grasp why things come out the way they do... I used a piece of factory loaded ammo as a basis for comparision, and set my bullet seating die up. My finished product came out to 2.194 inches COAL, which my books show as being within SAAMI specs (between 2.165 and 2.26"). But, two of my first ten cartridges came out at 2.190 and 2.189 inches, for a variation of .004" and .005" from the standard measurement.
I'm just building plinking ammo for the moment, so I'm not really too concerned with this variation for that purpose. However, as I try to improve my ammo for other purposes, I'd like the COAL to be the same. Any idea why this might have occured? I took new Winchester .223 brass, resized it, trimmed to 1.751", chamfered and debured the case mouth, then threw in a primer, powder, and bullet. What would lead to a length variation? Is it cheap bullets (I'm using bulk no-name brand bullets)? Or did I do something else I shouldn't have?
Of course, it is entirely possible that I am being too anal on this!!! I just measured a strand of my hair with the calipers, and that reads as .003 inches! So, we really aren't talking about a heck of a lot of variation here... But, you guys are my experts on precision, so what do you think?
Anyway, I'm still happy to have completed the process to some functional degree... Here is my first ten of fifty rounds: