correct primer choice VS less correct primer choice

[JFrank]

I like the ambition, but I would not continue to bounce around on yardage you will chase your tail. pick a yardage that you intend to compete at all primers most all primers are tunable the goal is to streamline results sooner than later. often once you get a gun mostly cleaned up on one primer very often there will be another that just edges it out that's what your looking for not a complete re-build unless one just refuses to give respectable targets anywhere then completely rebuild if necessary. primers can be a slight fine tune to the good or a course chance to the bad by this point a guy is usually fine tuning you can not I repeat you can not do a fine adjust at multiple yardages, there is more to it than that. if your a position shooter with multiple target sets to deal with I Shawn Williams implement additional procedures
to draw the best out of multiple targets.

Shawn Williams

Thank you

 

[Northridge]

View attachment 1084444 The results were that the Fed 205 opened up and went vertical the 450s stacked like cordwood. Against my base load br-4
Point to remember is test at the distance you compete at.
North ridge covered even more ground with a primer ladder, I may implement that into my regime

SPJ I can see good info of all three primers on your second target, based of how each is shaped I would have a different adjustment for all three to improve there general grouping but I would say there all going to be good even the vertical 205 target actual is not bad it just going to need a charge alteration to get it back on track. nice work

Shawn Williams

 

[Mulligan]

I see a sub 1” this year, these guns, knowledge, smith’s and equipment are outstanding!

Mike

Only thing I would suggest is not to shoot multiple dots sprinkled left and right if possible if shooting from bags, if a guy is not diligent the difference in the bag bind as you swing left and right will affect how a gun once to group. if you need multiple dots try sticking them vertically over one another less chance of changing bag bind the bind can cheat a group or primer test of its success.

Shawn Williams

@Northridge
This is the sort of advice that helps make this forum the best on the net!
Thank you
CW

 

[JFrank]

Your say that distance will give different results
Thanks like say the third shot
will make the group smaller
I find the group will never get smaller then the second shot
I use two when testing shots

Yes
That's what I said.

 

[JFrank]

Apologies to Northridge for sidetracking your thread.

 

[Northridge]

Apologies to Northridge for sidetracking your thread.

did we get sidetracked ? I don't think so we are just talking back and forth know problem SJP

Shawn Williams

 

[tom]

did we get sidetracked ? I don't think so we are just talking back and forth know problem SJP

Shawn Williams

Yeah, we were discussing Leo's sub one incher!

 

[Northridge]

Yeah, we were discussing Leo's sub one incher!

that sounds more interesting....if I can beat his Leo's scores in second targets I will be making headway..

Shawn Williams

 

[rardoin]

Only thing I would suggest is not to shoot multiple dots sprinkled left and right if possible if shooting from bags, if a guy is not diligent the difference in the bag bind as you swing left and right will affect how a gun once to group.

Interesting...I never considered that as I do most of my testing at 300yds but still requires a swing R/L that could be significant when splitting hairs on groups. It would be one reason to shoot a single centered aimpoint on an e-target so the tracking should be identical from test group to test group.

Thanks

 

[mikecr]

Mikecr, firing pins stop on primers, varying protrusion itself doesnt change how deep a primer is hit, what it does do is change effective firing pin fall. Meaning, if you reduce protrusion .010" you have increased effective pin fall .010". I would bet you will see the same effect fine tuning your pin fall.

I know this, and believe it's what I described. Changing released firing pin protrusion changes pin distance to strike(from cocked), thereby affecting striking force.
And it's finer and more independent to adjust only the pin rather than a trigger hanger for this(which messes with timing).
Some go to different pin weights or different springs, but these are not fine adjustments either.

 

[Alex Wheeler]

Yeah, we were discussing Leo's sub one incher!

If anyone would know about it, it would be you!

 

[tom]

If anyone would know about it, it would be you!

You disgust me, I would never have meant for that to be a penis joke...... maybe

 

[Nature Boy]

Nature Boy I would try a tenth more powder with the BR-4's!

Joe Salt

Joe,

I tried it and you were right. Bumped up 0.10gn and got this result for 5 shots at 100 using the BR4s

2,919 FPS, SD 5, ES 13

I’ll give it a try at the next mid range match. Thanks!

 

[clunker]

Has anyone ever put together a list of which primers tend to be most compatible with which powders, or are there just too many other variables in play? That would be a very handy resource for someone just getting started in reloading.

 

[Northridge]

Has anyone ever put together a list of which primers tend to be most compatible with which powders, or are there just too many other variables in play? That would be a very handy resource for someone just getting started in reloading.

there is a lot at play for sure, but that's half the fun in reloading is compiling data all the while your out shooting your tests. I think sometimes it is good not having outside influence as it can hold a person back.

Shawn Williams

 

[cheyenne01]

Not sure on the best primer for the powder
Here is my experience the other day.
Have a new open gun in 6.5-47 lapua
Started load development, The right side of the target was 3 different primers.
All was 5 shots at 100 yards. The 40.2 group I pulled the lowest shot

 

[Northridge]

View attachment 1085950 Not sure on the best primer for the powder
Here is my experience the other day.
Have a new open gun in 6.5-47 lapua
Started load development, The right side of the target was 3 different primers.
All was 5 shots at 100 yards. The 40.2 group I pulled the lowest shot

Looks like you have several options to play with, even the less favorable groupings with a little adjustment may give similar results

Shawn Williams