144 grain Berger 6.5mm

I posted this last month in the Reloading pages but did not get a response.

So I am reposting here.

Can you calculate QL data using RL 16 for this new bullet?

It is 1.413 inches long with a 0.469 bearing surface.

I will seat to 2.900 OCL.

24 inch barrel.

Hornady brass.

And Lapua brass if you have the time to do both.

Many thanks!

Here is some prelimianry data points for the 144 grain Berger with both Hornady and Lapua brass. I obviously started about 100 fps too high w Hornady brass which kind of surprises me as 42.7 grains RL!6 has been accurate and relilably not over pressure with the 147 ELD.

Good nes here is how accurate the Nosler RDF is w Lapua brass. It was just a lot more finiky about jump than the ELD's but sure liked the Lapua brass.

144 GRAIN BERGER.

Hornady brass (3-fired)/Federal 210M/RL-16/2.912-2.920 OCL/.290 neck bushing/45 degrees F

42.7 2826 fps (fouling shot from 140 Hornady American Gunner BTHP)
42.7 2849 fps
42.7 2841 fps
42.9 2877 fps
42.9 2876 fps
43.1 2886 fps
43.1 2890 fps

Lapua brass (new)/CCI 450/RL-16/ 2.911-2.216 OCL)/unsized neck.

42.3 2733 fps
42.5 2756 fps
42.7 – 43.3 error
43.5 2835 fps

Lapua (new)/CCI 450/RL-16/ 2.917-2.920/.291 bushing.

42.0 2788 fps
42.3 2790 fps

Lapua (1-Fired)/CCI 450/2.917/.291 bushing.

(+ ½ grain difference in H20 capacity from unfired case).

42.0 2769 fps
42.2 2769 fps

Minus 20 fps from new brass. 2 shots touching at 200 yards.

140 NOSLER RDF

Lapua brass (new)/RL-16/210 M/2.914-2.920 OCL/.291 bushing

41.6 2759 fps
41.8 2759 fps
42.0 2788 fps
42.2 2787 fps
42.4 2831 fps

(Entire string very accurate. Node at 42.1) Use this to fire form Lapua brass.

147 HORNADY ELD.

Lapua brass (new)/RL-16/CCI 450/2.899-2.921 OCL/Not sized

41.0 2612 fps (fouling shot after American Gunner ammo)
41.2 2610 fps
41.4 2632 fps
41.6 2649 fps
(41.2 grains max without using a drop tube).

147 Hornady ELD.

Hornady brass (3-fired)/42.7 grains RL-16/210M/.290 bushing/shoulder set back 0.005 by mistake.

2813
2810
2816
2791
2807 Average. (About 50 fps faster than normal).

Less accurate than normal (2 x 1 ¼ inch ES @ 200 yards).

Looking great. You definitely ran the gamut of combos.