Thread: Trying something, Eric Cortina method of load development

If you can get yourself a redding body die, it's possible to run a loaded round through them just to nudge the shoulder a touch.

They might not make one for something so unusual though.

Originally Posted by Pommy

If you can get yourself a redding body die, it's possible to run a loaded round through them just to nudge the shoulder a touch.

They might not make one for something so unusual though.

thanks for the suggestion, would be great if it was a thing but I doubt it and even if it is a thing finding one in NZ would be little to no chance....I'm resigned to pulling the loads I have done and learning from my lesson.....first time fire forming brass....it's been a process

Originally Posted by dannyb

thanks for the suggestion, would be great if it was a thing but I doubt it and even if it is a thing finding one in NZ would be little to no chance....I'm resigned to pulling the loads I have done and learning from my lesson.....first time fire forming brass....it's been a process

Just go out in a paddock and run them all through the chamber a couple of times, that will cure them if close to chambering. Fire any that are too tight.
The donut ring on the neck and a normal load method gives a much more consistent fire form case than a soft load.

Originally Posted by Moa Hunter

Just go out in a paddock and run them all through the chamber a couple of times, that will cure them if close to chambering. Fire any that are too tight.
The donut ring on the neck and a normal load method gives a much more consistent fire form case than a soft load.

nah, I'll just pull them and re size them, not wasting 40 primers, projectiles and the powder when I can easily fix it and reuse all the components.

to clarify the fire forming loads weren't soft they were just middle of the road loads from ADI load data, where as the charge ladder was from middle of the road to just above book max.

Originally Posted by dannyb

nah, I'll just pull them and re size them, not wasting 40 primers, projectiles and the powder when I can easily fix it and reuse all the components.

to clarify the fire forming loads weren't soft they were just middle of the road loads from ADI load data, where as the charge ladder was from middle of the road to just above book max.

How do you know 40 wont chamber and eject and not just one or two ? I run all my Ackley reloads through the chamber to check em and some batches get a few tight ones that resize themselves when chambered. At home you can bang the bolt down with your palm - something you dont want to do in the field.

Originally Posted by Moa Hunter

How do you know 40 wont chamber and eject and not just one or two ? I run all my Ackley reloads through the chamber to check em and some batches get a few tight ones that resize themselves when chambered. At home you can bang the bolt down with your palm - something you dont want to do in the field.

40 was the amount of loaded rounds I checked in the rifle chamber at home (after my mate made the comment about some being hard to chamber) where I felt resistance before the bolt was all the way closed, I'm confident they would all chamber just they require a bit of effort to do so (as stated my mate chambered and shot them successfully), Are you saying that I can use the chamber to bump the shoulder back ? Some where not as bad as others but I would have thought that forcing the bolt down to bump the shoulder back would still not result in a round that chambers smoothly (ie:with just the smallest amount of resistance).
I still feel this is not a good idea as bumping the shoulder back after seating the projectile would move the projectile in relation to the lands ?
Anyone else got any thoughts on this before I pull 40 rounds and go through all the effort of salvaging the powder, depriming, resizing, re primimg, recharging and then re seating ?

Originally Posted by dannyb

40 was the amount of loaded rounds I checked in the rifle chamber at home (after my mate made the comment about some being hard to chamber) where I felt resistance before the bolt was all the way closed, I'm confident they would all chamber just they require a bit of effort to do so (as stated my mate chambered and shot them successfully), Are you saying that I can use the chamber to bump the shoulder back ? Some where not as bad as others but I would have thought that forcing the bolt down to bump the shoulder back would still not result in a round that chambers smoothly (ie:with just the smallest amount of resistance).
I still feel this is not a good idea as bumping the shoulder back after seating the projectile would move the projectile in relation to the lands ?
Anyone else got any thoughts on this before I pull 40 rounds and go through all the effort of salvaging the powder, depriming, resizing, re primimg, recharging and then re seating ?

1) Because Ackley rounds dont stretch we want to keep them tight and not size them down each firing so as to extend case life. 2) What I find is that different brands of brass, number of times fired etc causes different spring back of sized cases so it is normal to get a few tight ones. I leave my die permanently set and dont check it for each lot of cases. This means I can end up with a few tight ones sometimes.
If they are all run through the gun pre hunting that seems to fix them as it is normally just the neck junction that is tight.