norma factory ammo being over pressure

[Long drag]

Had a similar problem with Hornady in 243, changed to Norma great round.

 

[jp 7saum]

Tried Hornady superformance 75gr yesterday and it worked perfectly, there was no cratering or anything and we’re running at a good 3500fps so just gonna use them from now on

 

[Dub1191]

Hi I ordered several boxes of this Norma tipstrike 76gr .243 Win ammo like a year or maybe a little over ago but I just took it out to shoot it for the first time recently in an AR-10 chambered in .243 I have and I shot a 10rd mag and picked one of the cases and it had a blown out primer and a heavy ejector swipe on the brass next to the primer aswell so I picked up the rest and they all had the heavy ejector marks and the primers were extruded back into the firing pin hole 10-17 thousandths of an inch and were super close to being blown out and on my chrono the first shot was the highest velocity out of the 10 rounds so it was just a little hotter than the other 9 and blew all the way I didn’t shoot anymore of those after that because I knew that those were signs of overpressure and was searching around on google to see if this was a known issue and I came across your post and wanted to reply to your post that I had seen the same thing with this Norma Tipstrike 76gr .243 Win ammo and was glad to find your post be because I was also wondering if anyone else had come across this.

 

[jcalleja91]

I have had a similar issue with .223 Tip Strike 55gr in a Bergara Stoke... i was suspecting it was the ammo and its reassuring to see it's not only me having issues with Norma ammo recently.

It shot absolutely fine with Sako 50gr/55gr Gamehead.. although Hornady V-Max was getting lightstrikes 1 in every 5 or so rounds..

Any additional pearls of wisdom for this or shall I just take the remaining Norma back to RFD and try some other brands??

Picture of brass and firing pin below for reference.

 

[jp 7saum]

I just took mine back and swapped them for Hornady suoerformance and they worked like a dream and I’ve shot them ever since

 

[Taff]

There is a problem today with Norma ammo, according to a well known source in the ammo trade, Norma and sake ammo ( both owned by beretta) are using different powder loads due to a shortage of powder, this has so far shown a variation of over 200 fps in loads tested. Depending on packaging this could cause accuracy problems, hopefully they are small batch packaging.

 

[Edinburgh Rifles]

unless that's a shadow around the firing pin you have an oversized hole......never a good thing

even weak loads with crater the primer, the crater buckles the metal around the hole and the firing pin has more chance of punching that disc out
Very few European manufacturers will run close to CIP PMax for any cartridge

 

[Edinburgh Rifles]