Magpro temp sensitivity

[Bobcat 33]

Try a 10-20 round group and then post a picture of your 1/2” group. 3 round groups tell you nothing.

To me it does, 3 rounds at a time is plenty with barrel temp , etc.

 

[jfk69]

To me it does, 3 rounds at a time is plenty with barrel temp , etc.

The minimum number of shots to have any statistical validity is 10. 20 is better, 30 is best but not really necessary. 3 shots is “random noise” in a dispersion and has almost no value in determining whether the gun/load is accurate. You are likely fooling yourself saying it’s a 1/2 MOA gun.

 

[Weldor]

Ran a 10 shot test with Magpro Friday morning. Kept ammo in a small cooler just to check velocity at 65-70 degrees. Average 2926 with 165 Gamechanger in my 280 AI. Sd's were suprisingly good. Next test is at 90 plus and ammo at ambient.

 

[jjohnsonElknewbie]

Ran a 10 shot test with Magpro Friday morning. Kept ammo in a small cooler just to check velocity at 65-70 degrees. Average 2926 with 165 Gamechanger in my 280 AI. Sd's were suprisingly good. Next test is at 90 plus and ammo at ambient.

Thanks for head's up. I see some RL 16 is being stocked, and I ran some quick numbers with it. It's running about the same MV with significantly less powder than the other powders. Case fill is around 92%, but burn rates are 100%. If I can source some locally, I'm gonn give it a whirl in my 6.5 WSM. RL16 is known for good performance in the 300 WSM, and I'm hoping its a viable option in my rifle as well.