I am trying to seat the case flush with my barrel.....If I try any lower with my LRN then it sits too much under the end, Is this a problem?
I can try upping a bit more and see what happen....Or reduce OAL.
Thanks
Unburned powder .45ACP
- Thread starter VooDooMan
- Start date
I am trying to seat the case flush with my barrel.....If I try any lower with my LRN then it sits too much under the end, Is this a problem?
I can try upping a bit more and see what happen....Or reduce OAL.
Thanks
The .45acp cartridge using lead bullets do not require anything more than a taper crimp. Just remove any belling you may have applied. The bullet is held in by case friction not by the crimp. Applying more crimp may actually loosen the bullet as the case expands below the crimp.
It sounds to me like you have a bad lot of powder. Charges of 5.1 gr - 5.7 gr under that bullet should see all the powder burned. My personal load using 231 is 5.1 gr under Lyman 220 gr lead bullets and I do not experience any unburned powder. Loads below 5 grains likely will have uburned powder as you fall below the effective load rate for the powder.
There is no difference in performance using Small or Large pistol primers. This has been tested and confirmed numerous times shortly after .45acp ammo started coming out with SPP.
Take Care
Bob
It sounds to me like you have a bad lot of powder. Charges of 5.1 gr - 5.7 gr under that bullet should see all the powder burned. My personal load using 231 is 5.1 gr under Lyman 220 gr lead bullets and I do not experience any unburned powder. Loads below 5 grains likely will have uburned powder as you fall below the effective load rate for the powder.
There is no difference in performance using Small or Large pistol primers. This has been tested and confirmed numerous times shortly after .45acp ammo started coming out with SPP.
Take Care
Bob
Cocked&Locked
CGN Ultra frequent flyer
- Location
- S. Ontario
I am trying to seat the case flush with my barrel.....If I try any lower with my LRN then it sits too much under the end, Is this a problem?
I can try upping a bit more and see what happen....Or reduce OAL.
Thanks
What your doing is headspacing the round on the bullet, rather then the case mouth. If it's reliable, it's not really an issue, but the farther out you seat, the lower your cartridge pressure with a given load. Military hardball oal is 1.23, i think you said your at 1.27 with a round nose cast. So you have a larger volume, and a less then max charge, therfore, lower then normal pressure. I'd grab a manual that has your bullet, find out what they suggest for max oal, and try a few loads at that length. Unless your competeing in national bullseye, your not going to notice much accuracy difference.
er, and if you are, your a damn better shot then I, so i'll shut up from this point
What your doing is headspacing the round on the bullet, rather then the case mouth. If it's reliable, it's not really an issue, but the farther out you seat, the lower your cartridge pressure with a given load. Military hardball oal is 1.23, i think you said your at 1.27 with a round nose cast. So you have a larger volume, and a less then max charge, therfore, lower then normal pressure. I'd grab a manual that has your bullet, find out what they suggest for max oal, and try a few loads at that length. Unless your competeing in national bullseye, your not going to notice much accuracy difference.
er, and if you are, your a damn better shot then I, so i'll shut up from this point
Hmmmm, You bring up a valid point that I must say is good........I never realized this but its true, I just tried it out, I am indeed headspacing on the round......Not by much though.
I also noticed CRIMP plays a role in case headspace. What do you suggest is ideal crimp then? I am at .470" roughly.
My winchester auto factory hardball measures CAOL at 1.267"
Some research has yielded that most of the guys are reloading the tumble lube design with 5.4-5.6 grains of W231.
I was not only way off on my loads ( I had intended for a light recoil plinking round not a hot zinger ) But I now suspect my CAOL is off as well.
Can you confirm the hardball CAOL?
Thanks for the tips, I appreciate it.
Do you mind posting your CAOL for me?
Seems that may be my other issue.........Thanks!
Cocked&Locked
CGN Ultra frequent flyer
- Location
- S. Ontario
first try a taper crimp die, that will let it sit right on the cast mount, and the position of the bullet it much less critical. Just push your OAL back till it's not sitting on the bullet. All of the tumble lube bullets i've worked with (not many addmitedly) where knurled on the OD. Oh wait, i know the type you mean! Just ignore the rings, and taper crimp. Works fine, infact, will give you better accuracy then the roll crimp. I will confirm OAL later, but my hornady manual was giving 1.23
