Relative to handling. I do load and unload the .25 cases by hand. It is also possible to insert them in the T/C loader that is intended for 209's. I had some problem with the 209's not wanting to come out of my Omega. Some fall out some do not. The ones that fall out can get trapped in the trigger housing and that can be a problem. I have not had the problem with the .25 as I can pluck it out more easily. I can also carry the .25 cases loose in a pocket which I do not feel comfortable doing that with the 209 primers as they are easier to set off with a fall on a rock. I could not find any of the 209-4 primers in the Phoenix valley and no one could even verify that they existed. I understand that the "new" remington is probably the old 209-4 so it is now available but at a very high price at Walmart which is the only place I can find them. My Omega is a crud ring master. It makes such a bad ring with 777 in any form that I have finally stopped trying to use the stuff. I get very good results with Black Mag'3 and it too is pretty steep in price. I am going to start evaluating Pinnacle as I have four pounds of the fffg version which apparently works pretty well for some. I may go all the way back to real black as I have several pounds of ffg Goex and have never tried it in the Omega. Pyrodex shoots extremely well in the Omega but is pretty dirty and second shots are a little slow to accomplish. I can get four or five shots with the BM3 without a swab between shots so a second shot is pretty fast. Personally I prefer to put two in an Elk if I can even though I agree one will usually kill the critter if placed right, but not immediately. I see TV hunters having a big bull drop in its tracks when hit; but, my Elk apparently have not seen the shows as they stay on their feet with even direct heart shots. I guess it is a personal thing but the 25 works great for me. I have not have any ignition problems with the conversion. The cases seal quite well on the mouth of the case if it is the correct length for your rifle. I also get absolutely no blow back with the conversion. I have not heard of any one having any problems with this conversion before this thread.