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OK ran some Wednesday. I tested 110 sierras and am looking to get 5.56 velocity but with double the bullet weight. I ran them in batches of 5 rounds and started out at 45 grs up to 48 grs. in .5 increments. Load were as follows; powder I.M.R. 4895, primer WLR, case Federal commercial, Sierra 110 gr HP with an AOL of 2.60.
Atmosphere conditions; Bar 29.911, Temp 73.9 F, Humidity 14%, Density Alt 2943, actually Alt 4350.
45 Grs of powder average 3082 FPS
45.5 Grs of powder average 3124 FPS
46 Grs of powder average 3094 FPS
46.5 Grs of powder average 3121 FPS
47 Grs of powder average 3130 FPS
47.5 Grs of powder average 3180 FPS
48Grs of powder average 3198 FPS
Not exactly linear but a start. I found that 46.5 and under to be very soft loads. The rifle is a springer with a heavy match Barrel, heavy match Birch stock. Barrel 22" with a twist of 1-11. Scoped with a Harris attach more less permanently. With my goal stated above I feel comfy with moving on and loading 20 rounds each starting from 45 grs to 46.5 and see which load gives me what I want with accuracy I am looking for too . Looking forward to the next step. Any comments and or help is welcome guys your opinions are welcome.
 
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I have a 110 gr Hornady Vmax load for my SOCOM that I really like but I use IMR 3031 because of the shorter barrel.

I'd recommend testing loads (using your powder and dimensions) using from 44 - 48 grains of powder. I think you will find the best accuracy around 44 - 44.5 grains. I wouldn't go much over 48 grains because of port pressure issues.
 
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