CCI 450 alternates?

[hoghunter55]

CCI 400 do fine in my 6.5G and 6.8SPC but I have a bolt 223 now and they seem to be the weak point. I know the 450 has a thicker cup, what else could I use?

 

[strut64]

I have used Rem #7 1/2 with about equal results to CCI

 

[kyotekiller25]

Can also use the BR4s or Rem 7.5s

I use the 7.5s in a bolt 223 Wylde with no issues.

 

[Bob3700]

U can interchange the 450s for CCI 41s or the older Russian SRM primers.

 

[paperpuncher]

CCI br-4 or Fed 205m

 

[RabbitSlayer]

Federal AR match has a thicker cup too

 

[Clancy]

I’d buy several thousand CCI 450 and Fed 205. If a load won’t shoot with one or both of those, it’s not the primer.

 

[JFrank]

CCI 400 do fine in my 6.5G and 6.8SPC but I have a bolt 223 now and they seem to be the weak point. I know the 450 has a thicker cup, what else could I use?

By saying weak point, what are you referring to ?

 

[SecondsCount]

By saying weak point, what are you referring to ?

Probably a large firing pin compared to an AR.

 

[Murray Brook]

If you are referring to primer specs this chart may help you.

 

[hoghunter55]

By saying weak point, what are you referring to ?

Some cratering, a few even pierced, but the load isn't over pressure. This is happening at both accuracy nodes that I found and one charge is 3 grains less than the other.

Probably a large firing pin compared to an AR.

That's a great point, it's a Bergara and I have no idea of the pin diameter, but I'll measure.

 

[Spyder1958]

Some cratering, a few even pierced, but the load isn't over pressure. This is happening at both accuracy nodes that I found and one charge is 3 grains less than the other.

That's a great point, it's a Bergara and I have no idea of the pin diameter, but I'll measure.

My Bergara has started doing this. Last week pierce one and locked the bolt back. Had to disassemble the bolt to reset everything.

 

[William Vogel]

My Bergara has started doing this. Last week pierce one and locked the bolt back. Had to disassemble the bolt to reset everything.

You’re probably going to have to bush the firing pin hole in the bolt. Ask me how I know. It only takes a few blow outs to erode the bolt face and you’ve already crossed that line. Putting thick cup primers in doesn’t fix it once the hole and pin are eroded. I went to 0.062 firing pin diameter within the repair and you’ll be able to shoot CCI 400’s again with no issues after repair.
Magtech 7 1/2 primers seem to have thick cups also. That’s what I was going to post but after seeing your pictures I figured I’d tell you about what needs to be done.

 

[SKWERLZ]

I have used Rem #7 1/2 with about equal results to CCI

Same.

 

[Bronsin]

Some cratering, a few even pierced, but the load isn't over pressure. This is happening at both accuracy nodes that I found and one charge is 3 grains less than the other.

What?

 

[Texas Solo]

Yup, you need to bush the bolt.