Primers backing out?
- Thread starter kenbro
- Start date
HonestJohn
Well-Known Member
Try mixing some propellants together and see what happens! 
Smellydog
Well-Known Member
No not at all. The primer always backs out first in any action. By default there is always an amount of headspace for reliable functioning.
As pressure drops the case let's go of the chamber wall and follows the primer to the bolt face swaging over the primer.
palmer_mike
Well-Known Member
Its a rimmed cartridge
A rimmed cartridge that headspaces on the shoulder, I did check before posting…..
HonestJohn
Well-Known Member
Could possibly be a case of slight lug set back.
Heym SR20
Well-Known Member
303 Savage in what type of rifle?
REACH compliant powders are no better or worse than American IMR, H etc. What did you use to use. I would go to a burn rate chart and select the closest powder to the one you are using.
If you shooting a rimmed cartridge, I would guess its either an old lever action or a break action. If you are using a compressed load you are probably stretching the action with the breach face moving allowing the primer to back out. A rimmed cartridge head spaces on the rim. Cut a disk of paper. Glue to top of cartridge. If it closes too much head space.
REACH compliant powders are no better or worse than American IMR, H etc. What did you use to use. I would go to a burn rate chart and select the closest powder to the one you are using.
If you shooting a rimmed cartridge, I would guess its either an old lever action or a break action. If you are using a compressed load you are probably stretching the action with the breach face moving allowing the primer to back out. A rimmed cartridge head spaces on the rim. Cut a disk of paper. Glue to top of cartridge. If it closes too much head space.
palmer_mike
Well-Known Member
palmer_mike
Well-Known Member
Extruded primers - The Firing Line Forums
Extruded primers Handloading, Reloading, and Bullet Casting
thefiringline.com
Interesting thread on another forum with the same issue as the OP.
Incidentally most links I’ve found suggest that as a rimmed cartridge it headspaces off the rim?
palmer_mike
Well-Known Member
Please provide a link as I’m having trouble finding the same as you?
kenbro
Well-Known Member
Yes I know that finn, Please re read #18.
Did you find any data for using those Vhit powders you quoted with this cartridge?
Cheers, Ken.
kenbro
Well-Known Member
No not crimped and the factory ammo (Hornady) uses PPU brass.
Cheers, Ken.
kenbro
Well-Known Member
Hi,
As far as I know there is only one 303 Savage rifle, the 1899.
I think I would have seen some pressure signs before the action stretched.
The design of the bolt and a solid action makes for a pretty strong setup.
Compressed loads don’t always equate to over pressure, do they?
Cheers, Ken.
Heym SR20
Well-Known Member
Compressed loads rather equal loads that are at the top end of the scale as the case is overfilled.
What powder were you using??
This article suggests a number of different loads and I would compare the powder with something close to it.
.303 Savage | Handloader Magazine
www.handloadermagazine.com
In this burn rate chart published by Norma many American and European are compared with burn rates.
Reloading Data | Data for handloading with every caliber
NORMA wants to contribute to development and therefor we share approved reloading data for handloading with every caliber. Learn more about hand loading here!
www.norma-ammunition.com
Find something close and work up a load. Use a chronograph to check for velocity - the 303 Savage was an early cartridge on a par with 30-30, not like the later 300 Savage which i believe was the basis for the 308 Win
Last edited:
kenbro
Well-Known Member
Hi,Compressed loads rather equal loads that are at the top end of the scale as the case is overfilled.
What powder were you using??
This article suggests a number of different loads and I would compare the powder with something close to it.
.303 Savage | Handloader Magazine
In this burn rate chart published by Norma many American and European are compared with burn rates.
Reloading Data | Data for handloading with every caliber
NORMA wants to contribute to development and therefor we share approved reloading data for handloading with every caliber. Learn more about hand loading here!
Find something close and work up a load. Use a chronograph to check for velocity - the 303 Savage was an early cartridge on a par with 30-30, not like the later 300 Savage which i believe was the basis for the 308 Win
Over the years I’ve read all the info available about the 303S.
Go to powders used to be Varget (Compressed load with some bullets) and more often H4895.
My supply of 4895 is gone, hence the trials.
I been using N135 but come to a dead end on that one.
Currently using CFE223 and think I’ve still theres a bit more I can do with this.
It’s a bit more potent than a 30-30.
Some ammo is designed to use compressed loads.
Pretty sure it’s not a headspace (Or stretched action) issue as previously (Pre REACH) I had no problems with reloads or the small amounts of factory ammo used.
KB.
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