Blown primers

[jde650]

Would a difference of 0.035 between chamber length and case length cause blown primers with chamber length being longer.

 

[nso123]

Re: Blown primers

Typically, blown primers come from the load being too hot. What was the load?

 

[Sandbogg]

Re: Blown primers

Also, if you happen to be running a Jewell trigger they are very prone to breaking the sear tip when you get a blown primer.

 

[B3dlam]

Re: Blown primers

Also how many reloads do you have through this brass. Primer pockets can loosen up as the brass ages.

 

[DAVETOOLEY]

Re: Blown primers

Almost always it's a function of pressure and firing pin hole diameter.

 

[seanh]

Re: Blown primers

how are you measuring chamber length? What load are you using?

 

[JeffP40]

Re: Blown primers

Why would you think it would be a problem if the brass is shorter? the only way would be if the brass is too long and it is pinching the bullet. As said above, it is another problem with your loads.