Increased FPS

[DLT]

So Thanksgiving day I ran a ladder at 300 yards with a used 6br barrel I was given but still shot fine. Working up from 30.0 to 30.8gr of varget with the 95smk. The rifle shot well at 30.0 and 30.2 with 30.4 opening up slightly. The velocities for my 30.2 group was 2856, 2864, 2870. After I fired all my brass I did not anneal or tumble the cases like I normally do, I simply brushed the inside necks and ran through full length sizer before throwing powder and seating my bullets. Today on the range the load I had chose excelled in both s.d. and shooting flat. My speeds was well into 2890’s why would that have been ? It was cooler today than Thursday when I tested . I also used the same lot of powder, primers and bullets. Could not annealing and tumbling cause what I experienced ? Thanks

EDIT\\\. I also did not anneal or tumble the brass prior to testing at 300 either

 

[Retired shooter]

So Thanksgiving day I ran a ladder at 300 yards with a used 6br barrel I was given but still shot fine. Working up from 30.0 to 30.8gr of varget with the 95smk. The rifle shot well at 30.0 and 30.2 with 30.4 opening up slightly. The velocities for my 30.2 group was 2856, 2864, 2870. After I fired all my brass I did not anneal or tumble the cases like I normally do, I simply brushed the inside necks and ran through full length sizer before throwing powder and searing my bullets. Today on the range the load I had chose excelled in both s.d. and shooting flat. My speeds was well into 2890’s why would that have been ? It was cooler today than Thursday when I tested . I also used the same lot of powder, primers and bullets. Could not annealing and tumbling cause what I experienced ? Thanks

EDIT\\\. I also did not anneal or tumble the brass prior to testing.

SEARED bullets always fly faster. LOL. Darned auto correct.

 

[DLT]

SEARED bullets always fly faster. LOL. Darned auto correct.

I don’t understand

 

[Retired shooter]

searing. He was intending to say "seating " his bullets. You would fly faster also with your tail on fire.

 

[Clancy]

30 fps could be anything. If it was 80, I’d be worried.

 

[DLT]

30 fps could be anything. If it was 80, I’d be worried.

Ok sounds fair. I have had it happen with different lots of powder and different temperatures. Just scratching my head seeing if I might can learn something

 

[Clancy]

Ok sounds fair. I have had it happen with different lots of powder and different temperatures. Just scratching my head seeing if I might can learn something

I’ve seen changes like that with a change in humidity. I wouldn’t worry as long as it’s shooting well.

 

[DLT]

I’ve seen changes like that with a change in humidity. I wouldn’t worry as long as it’s shooting well.

It most definitely was today. 6br is a new cartridge to me, learning

 

[Lance21]

Had the brass been expanded before the initial test? If so and you didn't expand the 2nd time through, your neck tension could be higher, leading to more velocity, possibly....

 

[DLT]

Had the brass been expanded before the initial test? If so and you didn't expand the 2nd time through, your neck tension could be higher, leading to more velocity, possibly....

Yes I currently use a standard redding full length sizing die. Brass had 5 on it by time I tested the new bullet and 6 when I shot today.