Load tunning

[snipermedic]

So how many of yal have dialed in a load that you find works well then changed primers and run it on a chrono?

[catslayer]

I havent but would be VERY interested in results...

My guess is minimal change...

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[Hotrodd]

I havent but would be VERY interested in results...

My guess is minimal change...

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This!

[catslayer]

I mean if i had to pick one thi g i would think would make the LEAST change it would be primer

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[NMStickFlinger3]

I have always wondered if changing primers changes much......following!!

[zr2chevy22]

I don't see where primers would change much unless you go from standard to magnum or vice versa. IMO the differences in primers would be more reliability then anything.

[snipermedic]

If you think that's it's minum change then based on my testing you would be very wrong. I found a 1/2 moa load but had some issue with consistency. So I tested using same load just differnt primers with a magneto speed that was set up and not moved during the test. Your testing might very but numbers don't lie.

243 LRP primer test
40.5gr 2000mr 2.770

WLRP
A 3169 sd 35 es 74

SB LRM
2947* 3180 3194 3206 3212
A 3198 sd 14 es 32

CCI LRM
A 3180 sd 26 es 65

R.E.M. 9.5
3177* 2887 2840 2920 2928
A2893 sd39 es 88

FLRM
A 2934 sd 8 es 19

R.E.M. 9.5M
3080* 2887 2925 2951 2941
A 2956 sd es 66

[Outbreaker]

I never change primers. I use 1 for my ARs CCI 41, one for small rifle and 1 for large rifle and 1 for large rifle magnum.

[Horitexan]

That's not too surprising- I've never run a full on primer test like that but I've had plenty of change occur from primer changes. It's a great point to make - primers are not interchangeable and not equal.


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[J-Carp]

If you think that's it's minum change then based on my testing you would be very wrong. I found a 1/2 moa load but had some issue with consistency. So I tested using same load just differnt primers with a magneto speed that was set up and not moved during the test. Your testing might very but numbers don't lie.

243 LRP primer test
40.5gr 2000mr 2.770

WLRP
A 3169 sd 35 es 74

SB LRM
2947* 3180 3194 3206 3212
A 3198 sd 14 es 32

CCI LRM
A 3180 sd 26 es 65

R.E.M. 9.5
3177* 2887 2840 2920 2928
A2893 sd39 es 88

FLRM
A 2934 sd 8 es 19

R.E.M. 9.5M
3080* 2887 2925 2951 2941
A 2956 sd es 66

I had the same problem with my 204 load...changed primers and it was a tack driver.

[JBS]

On many occasions I have had a sub MOA load go south with only changing primer.