Cci 450 primers

[Jm9]

I am new to reloading and trying to learn . I have 62 grain ttsx bullets ,cfe 223 and h335 powders, and cci 450 primers . Reloading for my 223 . I can't find reloading info for the 450 primers . Am I right thinking the 450 primers will change the pressures that a 400 primer would create? And how would I go about figure the load charge for the 450 primers ?

 

[Jdne5b]

Start low and work up. They won't change pressures enough to make the starting book loads unsafe. H335 is sometimes posted with magnum primer data.

 

[A2guy]

Reloading for 6 months now. 9mm only. Need some imput.
I know you should stick as close to load data manuals to get reliable loads and have done so. Not ready to venture in the next level. However, due to the shortage of primers I have been running srp in my reloads and all go bang. I came into a 1000ct CCI #450 srpm. I load on the light side with bullseye 3.6 gr 115gr cprn. At 1.135. Will there be a problem with light loads and rifle magmuns?

 

[searcher]

Start low and work up. They won't change pressures enough to make the starting book loads unsafe. H335 is sometimes posted with magnum primer data.

I agree. You should expect a velocity difference of around 20-45 FPS spread between most primers, including magnum and non-magnum in my experience. So, as this person noted - you will be well below your "safe" velocity when you start at the bottom of the manual. You just never want to have a spicy load, then substitute for a different primer without first backing off the powder a few grains and working up as though it were an untested load. Sometimes that extra little bit of pressure can put you over the top and you might not find out till you shoot on a hot day.

 

[skeeljc]

I am saving my CCI 450's to load 9mm for my PCC (Pistol Caliber Carbine) when I run out of small pistol primers. I doubt I will be able to tell the difference.

 

[A2guy]

Thanks for replying. Dont want toss out primers at this stage of a shortage.

 

[wagonman]

Thanks for replying. Dont want toss out primers at this stage of a shortage.

During the great primer shortage of the clinton era, we made do with what we could get, we developed loads for are handguns with whatever small primer we got are hands on

 

[MGYSGT]

Nothing wrong with using 450's. That's all I ever use with the .223. Just don't start at max loads. I usually start in the mid load range and go up or down based on group size.

 

[Nowhere Man]

Why not look for someone willing to trade primers?

 

[johara1]

I used 450's in my AR match gun and with 8208 and a 450 they shot in .3 at a 100. Plus they are a hard cup so no chance of slam fires....... jim

 

[hoz53]

Thanks for replying. Dont want toss out primers at this stage of a shortage.

dont throw them out, whatever you do- worse case scenario-- sell them

 

[Jm9]

Thanks for your guys advise.