Unsure of your purpose but I have a little experience with working reduced loads. FYI, here is where I am now.
Two boys, 7 and 10, both shoot Mossberg ATR 308's, 20" 1/10 barrels. We use Boyd's Prairie Hunter stocks (great addition) that are cut down to their respective LOP. 10yo uses 12.5" and 7yo is shorter at 11.5" (including recoil pad) Both use a Limbsaver recoil pad.
I used the Hodgson reduced load chart with H4895 and none of it would shoot good groups worth a darn. Groups at 100y were 3" with any round I used. Just too slow for any real effect. Maybe if you shot at 50y.
I continue to use the H4895 as the felt recoil is less than Varget, Benchmark, and H335. However, I went with smaller bullets. WE now use 125 sierra prohunter and 125 Hornady sst.
125 Pro Hunter
WIN Brass 2.005-2.006 length
47.5gn H4895
2.700" COAL
Avg. Vel is 3100 fps
My 10 year old shoots this no problem. It regularly shoots .75MOA or less at 100y. Cloverleafs
125SST
LAPUA brass 2.006 length
46.0gn H4895
2.700" COAL
Avg vel is 2800 fps
"feels" a little softer for my 7yo and doesn't shoot the screamers the above load does but still right at MOA at 100y
7yo has no problem with this load with the recoil pad. He is not huge either. 50lb kid.
Hope this helps.
LD
