Home Forums Hunting & Shooting Hunting Rifles Details wanted on Ruger American magazine lengths

I've owned two 243's and one 223. I had no issue with any bullet I tried in the 243's. The 105 A-Max reached the lands well within mag box confines. I used to have a picture, but lost it?

The 223 issue was a different story. The 75 A-Max wouldn't work. The rifle was throated appropriately, but the mag box was too short. All other bullets I tried worked fine, but I don't have any 68's or 69's on hand to check.

I tried a modification, but there's not an easy solution.

223 mag...



The back of the mag box snaps off easy enough. Push in the tabs and it pops off. The rear of the box is set up for a rotary fill. No spacer in the box. Just a thin plastic wall.



The hollowed out portion at the rear of the box is really thin. Too thin to increase usable space to 2.5"ish. If this area was solid plastic, it would be a quick fix.