Primers

[Tex51]

I have been working up a load for my Savage MSR10 6.5 creedmoor hunter version. My first semi auto to play with. I shot a 23/32 group at 100yds with 143 Hornady ELD-X SPBT bullets with 22grs of 4350 powder and Federal LMRP #215 and this is not what I would call a bragging rights group. I loaded the same exact load in the same Hornady brass except I used CCI LMRP #250 and shot a 16/32 group. This is getting better. I have loaded up another batch of the CCI version and 143 ELD-X SPBT bullets, and I am also going to try the 147 gr Match bullets SPBT and see if I can tighter up the 5 shot group. This semi auto has surprised me with its ability to shoot this tight of a group. I know that the powder charge is max or above what the reloading manuals show but this particular rifle does not like the lighter loads. Will post more when I get the rain to stop and I can get to the range.

 

[MtnCreek]

Why are you using mag primers?

 

[Doc68]

I use them because I get better SD with them then I did with normal large rifle primers....maybe he found the same??

 

[Tex51]

They give me better results at the target. standard primers seam to cause my groups at 100 yds to open up.

 

[Tex51]

I have also noticed that my rifle when using H4350 it likes 143 gr Hornady ELD-X but the lighter bullets like 140 and 120 grs it slings them into a 2" group. This may change if I change powder types and primers. I am working on a load for Hornady 147 gr ELD Match. I have not used them and would like to see how it shoots them with H4350.