Handloading 260 Remington

[michael_aos]

I'm using a Dillon RL550B. All brass full-length sized (equiv) and trimmed to 2.025". CCI BR2 primers. H4350 powder. ~2.82" COAL. 22" Lilja 1:8" twist barrel.

I used a Redding neck-sizer die with the titanium-nitride ball for the RP260 and Win 7mm-08 brass. Same die with a regular tapered expander ball for the Lapau 243 brass. Body-die in station 3.

Load #1
RP 260 Brass, flash-holes deburred, ~43.8gr via Dillon powder measure.
High 2808, low 2772, ES - 36, mean 2788fps, SD 15

Load #2
Lapua 243 brass, 43.5gr via RCBS Chargemaster 1500 & Whidden billet toolhead + funnel.
High 2859, low 2819, ES - 40, mean 2842fps, SD 14

Load #3
Winchester 7mm-08 brass, 43.5gr via RCBS Chargemaster 1500 & Whidden billet toolhead + funnel.
High 2813, low 2788, ES 25, Mean 2800fps, SD 9