small rifle vs. small rifle magnum primers

[wscrst]

Sorry, I have tried to search this one and have not been successful. I am ready to try my first 300 blackout handloads with 220g bullets and 10g of IMR 4227. I have CCI 400 small rifle primers from reloading .223. When I plug my data into the hogdon site it lists the magnum primer. I would rather use the 400s instead of the 450s since I have a lot of the 400s.

1. Will the 400s be okay?

2. Can an experienced individual tell me how the bigger blast from the 450s would affect the function of the cartridge?

Thanks a bunch. Always learning.

[Walkers Bay]

I've found no really noticeable difference between the two in supers. I can't see why it would make any difference in less powder then either.

[plant.one]

Sorry, I have tried to search this one and have not been successful. I am ready to try my first 300 blackout handloads with 220g bullets and 10g of IMR 4227. I have CCI 400 small rifle primers from reloading .223. When I plug my data into the hogdon site it lists the magnum primer. I would rather use the 400s instead of the 450s since I have a lot of the 400s.

1. Will the 400s be okay?

2. Can an experienced individual tell me how the bigger blast from the 450s would affect the function of the cartridge?

Thanks a bunch. Always learning.

400's will work. I use them in the blackout for subs and supers along with quite a few other folks. weather or not they'll be ideal for you is another debate I wont even venture into.

if you decide to switch to 450's - or even a different brand of magnum primer - at some point in the future, just remember you'll need to redo your load development, like you would anytime you switch a component.

[wscrst]

Good stuff. Thank you.