Thread: Looking a lot better

My Rem 700 SPS 243 appears to be shooting a lot better now. It shot average in it's from the factory form so I removed the pressure points under the barrel and free floated the barrel and also put some pillars in. Throughout the process I haven't really shot many good groups even after try various weight projectiles and different powders.
Today I took the 243 and 223 for a bit of a burn to see if I could get some reasonable groups and I surprised myself. The load I have settled on is the 95 gr SST loaded with 40 grains of AR 2209 as it shot a nice 13 mm group.
Me little Mod 7 shot ok for a stock standard rifle with one group at 16 mm. The 243 is quite fussy it appears as other loads with 87 gr Hornady and the 90 gr Game Changers spread the shots a little bit to much.

The average velocity for the 243 load was 2940 fps. This time I took both my Chrono's and set them up one behind the other so I could measure the same bullet through the two Chrono's at once as I was thinking the F1 model wasn't reading correctly. As it turns out there was a difference of about 30-40 fps between the two, the Pro Chrono on most occasions was the slightly slower reading.
All in all a good little exercise.

I compared my old Pro chrono (pre-digital model) against the Magnetospeed V3.
Out of five shots, three were within 1 fps, the other two were quite different but I put that down to the wind/muzzle blast having angled the Pro chrono a bit.

40 gr of 2209 seems to be a sweet spot for my Brno 243, had good groups with 85-100 grain projectiles, but my go-to is the 90gr ELD-X in front of 42.4gr, doing 3140fps

good to see you are getting sorted....not a lot worse than a rifle that just wont group worth a damn.

Originally Posted by Cigar

I compared my old Pro chrono (pre-digital model) against the Magnetospeed V3.
Out of five shots, three were within 1 fps, the other two were quite different but I put that down to the wind/muzzle blast having angled the Pro chrono a bit.

40 gr of 2209 seems to be a sweet spot for my Brno 243, had good groups with 85-100 grain projectiles, but my go-to is the 90gr ELD-X in front of 42.4gr, doing 3140fps

Yeh I will try those 90 gr ELDX sometime. I tried a few 90 gr Ballistic Tips as well, two powder weights of the same powder and they shot about an 13/4 inch group but the 46 grain load was to hot , bolt lift was ok but primer was flat the 45 gr load was much better.

I could not get the 95gr Hornadys to shoot in my 243 - try as I may. Ended up shooting the 85gr Sierra Gamekings

My Mod 70 Winchester .243 loves the 85 gr Sierra GameKings and 2209