streamerfish
Lil-Rokslider
- Joined
- Dec 12, 2025
- Messages
- 273
So. Getting ready to start some testing on the 6.5 Creedmoor. Since I got rained out essentially today, I decided to do some powder measure testing while I put together some pressure testing rounds.
So, the testing was done on my Lee Pro 6000 progressive press. The press had the resizing die and bullet seating die installed along with the Auto Drum powder measure. I used the same piece of brass through all of the testing, and visibly checking for stuck powder in the brass on each dump.
Weight measurements were conducted on a almost new Redding beam scale. I find the scale to almost be too sensitive. its really good...Anyways.
The generally accepted meta is that you can't use volume based powder measures for extruded stick powders, too inaccurate. People are more willing to use ball powders. The meta also is that the Lee auto drum is not precise enough either way for most people.
20 drops each of two different powders. Alliant Reloader 16 representing the extruded stick powders. And Ramshot Hunter representing ball powders.
I rounded to the nearest 5 hundredths as best I could visually looking at the scale.
The RL 16 results - 43.2, 43.35, 43.25, 43, 43, 43.2, 43.2, 43.3, 43.15, 43.25, 43.3, 43.1, 43.4, 43.15, 43.3, 43.25, 43.25, 43, 43.25, 43.35
Extreme spread of .4gr
basically plus or minus .2gr per drop.
Ramshot Hunter results - 42.3, 42.3, 42.2, 42.4, 42.25, 42.35, 42.2, 42.25, 42.25, 42.4, 42.2, 42.25, 42.25, 42.3, 42.35, 42.35, 42.25, 42.25, 42.4, 42.4.
Extreme spread of .2gr
plus or minus .1gr per drop.
Running some quick numbers in the shooterscalculator ballistics calculator (potentially not the most accurate, but gives a general idea.)
That extreme spread on the RL16 should be worth about 25fps (.4gr). That equates to roughly 1 inch spread at 500 yards. Or roughly 1/2" high or low.
Roughly 6 inches at 1,000 yards or roughly 3 inches high or low. At 300 yds its a 1/3rd inch spread.
The Ramshot hunter realistically isn't worth putting much thought into. Your not shooting the difference at any range.
My personal conclusion. If your shooting inside 500 yards, that swing is just lost in the white noise for most people. Definitely inside of 300 yards. It may be noticeable for people once you start stretching out to the 700+ yard range....maybe.....Target rifle maybe, average hunting rifle, probably not.
I would love to do some chrono testing with some different loads thrown on the progressive, to see what the real world numbers show, if anyone around the spokane/cda wants to hookup some time and do some shooting let me know.
So, the testing was done on my Lee Pro 6000 progressive press. The press had the resizing die and bullet seating die installed along with the Auto Drum powder measure. I used the same piece of brass through all of the testing, and visibly checking for stuck powder in the brass on each dump.
Weight measurements were conducted on a almost new Redding beam scale. I find the scale to almost be too sensitive. its really good...Anyways.
The generally accepted meta is that you can't use volume based powder measures for extruded stick powders, too inaccurate. People are more willing to use ball powders. The meta also is that the Lee auto drum is not precise enough either way for most people.
20 drops each of two different powders. Alliant Reloader 16 representing the extruded stick powders. And Ramshot Hunter representing ball powders.
I rounded to the nearest 5 hundredths as best I could visually looking at the scale.
The RL 16 results - 43.2, 43.35, 43.25, 43, 43, 43.2, 43.2, 43.3, 43.15, 43.25, 43.3, 43.1, 43.4, 43.15, 43.3, 43.25, 43.25, 43, 43.25, 43.35
Extreme spread of .4gr
basically plus or minus .2gr per drop.
Ramshot Hunter results - 42.3, 42.3, 42.2, 42.4, 42.25, 42.35, 42.2, 42.25, 42.25, 42.4, 42.2, 42.25, 42.25, 42.3, 42.35, 42.35, 42.25, 42.25, 42.4, 42.4.
Extreme spread of .2gr
plus or minus .1gr per drop.
Running some quick numbers in the shooterscalculator ballistics calculator (potentially not the most accurate, but gives a general idea.)
That extreme spread on the RL16 should be worth about 25fps (.4gr). That equates to roughly 1 inch spread at 500 yards. Or roughly 1/2" high or low.
Roughly 6 inches at 1,000 yards or roughly 3 inches high or low. At 300 yds its a 1/3rd inch spread.
The Ramshot hunter realistically isn't worth putting much thought into. Your not shooting the difference at any range.
My personal conclusion. If your shooting inside 500 yards, that swing is just lost in the white noise for most people. Definitely inside of 300 yards. It may be noticeable for people once you start stretching out to the 700+ yard range....maybe.....Target rifle maybe, average hunting rifle, probably not.
I would love to do some chrono testing with some different loads thrown on the progressive, to see what the real world numbers show, if anyone around the spokane/cda wants to hookup some time and do some shooting let me know.
