I decided to develop a load for my TRG with the Hornady 285 ELD-M and Retumbo , and settled on the longest feed-able length I could make work reliably - 3.743" ( 0.143 over SAAMI, ~0.047 off lands). Lapua Brass, CCI 250 primers.
Does anyone have the latest load data from Hornady (manual) about this load? I worked a pressure ladder from 85gn to 94gn and encountered no discernible pressure signs. Primers looked fine, with perhaps the faintest of faint cratering that could hardly be seen under magnification compared to the 85gr or factory lapua spent cases. All primers across the charge board seemed to decap at about 3.5 lbs +/- .5 lb on the rock chucker lever.
I am a bit concerned that I am not seeing signs at this charge. Should I bump up until I find more apparent signs?
My 85.00 gn (~2500fps) foulers produced a 3 shot 0.4" group at 300yd, and my 93.50 gn pressure ladder placed 2 shots in the same hole at 600with less than 1/8" vertical dispersion @ approx 2777 FPS, with a possible node from 92.5gn to 93.5gn
Is anyone else loading anything in this range?
Rifle is a 27" 1-10 TRG .338 Lapua. Elevation 8,000', 80 F, right quartering 3-5mph wind
Does anyone have the latest load data from Hornady (manual) about this load? I worked a pressure ladder from 85gn to 94gn and encountered no discernible pressure signs. Primers looked fine, with perhaps the faintest of faint cratering that could hardly be seen under magnification compared to the 85gr or factory lapua spent cases. All primers across the charge board seemed to decap at about 3.5 lbs +/- .5 lb on the rock chucker lever.
I am a bit concerned that I am not seeing signs at this charge. Should I bump up until I find more apparent signs?
My 85.00 gn (~2500fps) foulers produced a 3 shot 0.4" group at 300yd, and my 93.50 gn pressure ladder placed 2 shots in the same hole at 600with less than 1/8" vertical dispersion @ approx 2777 FPS, with a possible node from 92.5gn to 93.5gn
Is anyone else loading anything in this range?
Rifle is a 27" 1-10 TRG .338 Lapua. Elevation 8,000', 80 F, right quartering 3-5mph wind
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