I've recently switched and started loading Lawrence Magnum #9 Shot in my 410 AAHS Hulls. I'm not getting a full 1/2 oz shot drop. When loading the Eagle #9 shot I was getting .52 oz of shot but with the Lawrence its pretty consistent at .48 oz. Anyone experienced this? I know it's not a huge difference, but with 410 I like all the lead I can get. The extra 6 or 7 pieces of shot are important to me. LOL Also, I like to have a full hull instead of hearing the shot shake around so much.

Any serious advice I would appreciate. I've seen where some guys will drill the shot bar but wasn't sure how good of an idea that is.

Magnum shot is an alloy that is less dense than pure lead. Thus dops are lower weight slightly. Doubt isf will make any difference in your shooting.

The harder shot will probably give better patterns offsetting any minute loss of pellets. I would not worry about it even for a minute.

The Lawrence shot could be ever so slightly larger in diameter, therefore it does not pack as tightly into the charge bar.

Steve

.....but unless you changed the bar , you shouldn’t be experiencing loose, rattling shot from one brand, and not the other.......as the bar is measuring volume, not weight.

Other than the minute difference in size of 9 shot from one brand to the other.....you should have the same number of BBs........

My bar from the factory would drop around 211-212 grains of West Coast #9. 218 gr is 1/2 oz. I used a taper reamer from the bottom to open the cavity to drop 224 gr of West Coast #9. NSSA max shot for the .410 is 232 gr.

Thanks for the info Bob. I opened up my bar very slightly and its now dropping consistent 1/2 oz. and filling the hull nicely.