Okanogan
Well-Known Member
The ABM/Berger 215 ammo said right in the description that it was 3.60" but apparently a lot of shooters didn't understand what that meant. I have have shot it in both of my 300 WMs. In the heavy barreled rifle it shot well for me but not in the lighter barreled rifle.
The 215 is a fairly forgiving bullet to load for so it shouldn't be that hard to get someone to work up a similar load for your friend's rifle. Start with the 3.60 COAL and if necessary try a few variations of COAL shorter and longer for tuning. For powder, I think most use H1000 but RL26 and a couple others work well too. I didn't have any problem getting the 215s to shoot well in both my rifles. For the lighter barreled rifle, I had to slow down the muzzle velocity about 100 fps lower than the Berger/ ABM ammo to get it to shoot well. If you are starting from scratch, I think Norma 300WM brass is the same as the ABM brass. A good chornograph and some range time and it shouldn't be that hard. I think I still have 3 boxes of the ABM ammo left because I actually prefer to shoot my own reloads tuned to the specific rifle.
The 215 is a fairly forgiving bullet to load for so it shouldn't be that hard to get someone to work up a similar load for your friend's rifle. Start with the 3.60 COAL and if necessary try a few variations of COAL shorter and longer for tuning. For powder, I think most use H1000 but RL26 and a couple others work well too. I didn't have any problem getting the 215s to shoot well in both my rifles. For the lighter barreled rifle, I had to slow down the muzzle velocity about 100 fps lower than the Berger/ ABM ammo to get it to shoot well. If you are starting from scratch, I think Norma 300WM brass is the same as the ABM brass. A good chornograph and some range time and it shouldn't be that hard. I think I still have 3 boxes of the ABM ammo left because I actually prefer to shoot my own reloads tuned to the specific rifle.