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243 Terminator

 

You have entered the home of data for the Terminator family of cartridges. Like all loading data this is just a guideline to help you and not absolute information. This is simply what worked for us in just one or two rifles with our lot of powder, bullets primers etc. It is still your responsiblity to follow safe loading practices and make your own safety decisions.  It is not a safe loading practice to take your rifle chambered in one of these rounds even though we built it and simply start with the max load. It is still a required practice that you safely work up to a safe pressure and load. Load date can change from lot to lot with components, ambient temperature or any other number of factors. Please be safe and use this info as a guideline. Have fun and good shooting.

 

Shawn 

 

Chamber OAL: 2.868” / w comp 2.245” w 108 gr. ELD-M

Max Brass Length: 2.030”

Trim Length: 2.020”

DE Fire Formed Lapua Brass: Average OAL 2.028”

Test barrel: 26” Hart .243”, 1-8 twist

 

QL predictions:

 

Bullet: Hornady 108 ELD-M # 24561, G1 .536 / G7 .270

Brass: Lapua formed to 243 Terminator in jig

Primer: CCI 200

Powder: RL 26

Charge: 51.8 gr.

Load %: 101.3

Est Velocity: 3288 fps

 

Actual Testing:

 

OAL: 2.245”

RL 26

 

Charge                  Velocity                                Notes

45.0 gr.                 2913 fps

46.0 gr.                 2940 fps

47.0 gr.                 3061 fps

48.0 gr.                 3132 fps

49.0 gr.                 3161 fps

50.0 gr.                 3316 fps               no ejector mark, no bolt lift

51.0 gr.                 3392 fps               seater mark on bullet, adj OAL

 

50.0 gr. Testing

 

-.000”    shot 3 shot group @ 100 .5 moa, average velocity 3297 fps

-.005”    shot 3 shot group @ 100 1.0 moa, average velocity 3286 fps

-.010”    shot 3 shot group @ 100 .3 moa, average velocity 3289 fps