Thread: Best 243 load

I little report of "my case"!
I decide i want to go with the 85gr Speer BTSP on my Remington 700 BDM with 1-9" twist (1-9.1/4" twist to be more exactly). As per photos i start low 42 and went to high 43grains with some random results.
Component, Winchester brass, Federal 210 match primers, ADI2209 powder and projectile as above.

First things first, my 100grains Winchester factory ammo shot 1" with easy at 100yd…



My load development from 43-44grains





Sorry i didn't take photos of the lower charges but they were not good anyway…

Second go with the best charge from the start (43gr) and different seating depth. All seating depth measure from the ogive, i haven't work out the length to the "lens" yet…


Very first shot with clean barrel is high(alone) the following 2 are together (43gr @2.270")… All the following shots was with a "dirt" barrel, all the strings had at least 20 minutes wait in between with barrel and suppressor on ambient temperature…





I just preparing my brass for another round of "trying" to find the "thing"… By the way, the 43.5gr didn't work as do in many other rifles…

Mac