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Pressure signs

I would keep shooting that loading and watch for primer pockets getting loose in 5 or less firings. Each of the 3 rifles should be watched closely. Some may show pressure signs sooner then others.
These are ejector marks. Heavy on left, light but ok on the right.
Ejector Mark.JPG
 
243winxb said:
I would keep shooting that loading and watch for primer pockets getting loose in 5 or less firings. Each of the 3 rifles should be watched closely. Some may show pressure signs sooner then others.
These are ejector marks. Heavy on left, light but ok on the right. View attachment 221550
Click to expand...
That is a good illustration of ejector marks but also look at the edges of the primers are still round
 
243winxb said:
I would keep shooting that loading and watch for primer pockets getting loose in 5 or less firings. Each of the 3 rifles should be watched closely. Some may show pressure signs sooner then others.
These are ejector marks. Heavy on left, light but ok on the right. View attachment 221550
Click to expand...
Agree. If those loads shoot good in your rifle I wouldn't change anything. I saw nothing on your brass that would concern me personally.
 
BoomFlop said:
I am a new Reloader, and have been having very good success with the 5 rifles I am loading for.

Today we were testing our 3- 7mm-08's. I am loading a 120 grain Ballistic Tip, CCI BR primer with Varget. At 45 grains, I'm getting slight ejector marks on my Lapua brass (loaded At 2.1920 CBTO) as well as my son's Nosler brass (loaded to 2.2120 CBTO). I did not have any hard bolt lift.

How much should I drop charge? Is .5 grain appropriate? More? Less? Worst part is my best group came at 45 grains. Oh well, I'd rather be safe than sorry. It was 35 degrees today. Which is approximately our hunting conditions of 0-50 degrees.

Thanks all.
Steve
Click to expand...
Is this new brass or fired before? New I would be less concerned, and fired if the markings are that slight I still wouldn't be overly concerned because it is so slight. .....just keep an eye on it but to me....sounds like you have a ways to go before I would be concerned!
 
BoomFlop said:
I tried to take the best pictures I could. I put the marks at the 3 o'clock position for reference.

Lapau top case is on "em" and the bottom case is on "7m"

Nosler top case is on "7-0" and the bottom case is on the "L".

I want to be safe, I don't want to ruin my brass way early (they are hunting rifles that are not shot a lot) but at the same time I don't want them to be "slow" either.

I have read I should reduce 5%? What do you guys do when you get an ejector mark on a case with 45 gr?

Thanks
Steve
Click to expand...
Looking at the brass there is NO DEFORMATION on the lettering what so ever and your brass appears very dirty....looks to me like a normal ejector mark just removing some dirt....not an imprint....just me
 
The Lapua is new brass. The Nosler is now 2x fired. I think I'm going to let the Lapua be and shoot it at 45 grains. The Nosler I'm going to back off .5 grain as it shoot pretty good there. The 45 grains in my rifle was definetely better at 45. I'll revisit and play some more.

Bolt lift was super easy, in fact seemed easier than the lighter loads which makes no sense I know.

Thanks
Steve
 
Varget is Ar2208. This is one of the Australian Rifle series made by Australian Defence Industries.
All the Ar series are temp stable. Ar2207 = H4198, Ar2219 =H4198, BM2 = Benchmark, Bench Mark 8208 = 8208 XBR, Ae2206H = H4895, Ar2208 = Varget, Ar2209 = H4350, Ar2213SC = H4831SC, Ar2217 = H1000, Ar2225 = Retumbo and Ar2218 = H50BMG.

I work up in the hottest temp at home about 80ish*F using Federal Gold medal match, quite a soft primer. My hunting temps are 95*F to 105*F in out back Australia.
I look for the best group and stop when either the velocity (magnetospeed) doesn't go up any more, the primer flattens out or I get mild cratering. Remember soft primers.
If I get hard bolt lift before my desired velocity I change powder.

This procedure has worked well with all the above listed powders.
This procedure does NOT work with the double based powders I have used these being
Win748, Win760, RL15, RL17 and RL22. RL17 & 22 I will no longer use due to their very rapid over pressure in the last grain or so near maximum.
Now I work up any double based powder actually on the property.

Steve, work up in the maximum temp. you have at home and you should be good for 20* more in your hunting area.

Note well - I am using soft primers.

Steve.
 
BoomFlop said:
I am a new Reloader, and have been having very good success with the 5 rifles I am loading for.

Today we were testing our 3- 7mm-08's. I am loading a 120 grain Ballistic Tip, CCI BR primer with Varget. At 45 grains, I'm getting slight ejector marks on my Lapua brass (loaded At 2.1920 CBTO) as well as my son's Nosler brass (loaded to 2.2120 CBTO). I did not have any hard bolt lift.

How much should I drop charge? Is .5 grain appropriate? More? Less? Worst part is my best group came at 45 grains. Oh well, I'd rather be safe than sorry. It was 35 degrees today. Which is approximately our hunting conditions of 0-50 degrees.

Thanks all.
Steve
Click to expand...
Your Varget powder is rated at 8 in Extremen Volocity Spread. So temperatures isn't a problem in hot or cold weather. Take IMR 4895 at 166 for Volocity Spread. I haven't ever use Varget, but I am looking at it. That all I can add to this.
 
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