bradandash925 Posted January 26, 2014 Share Posted January 26, 2014 I have a bunch of IMR 4198 and some 208gr Hornady bullets with Remington primed brass. Is there anyway I can make some 300 blackout bullets with this powder? Has anyone used IMR 4198 for 300 blackout? I am open to suggestions on what is working for you all. Link to comment Share on other sites More sharing options...
MustangGreg66 Posted January 26, 2014 Share Posted January 26, 2014 Check out Hodgdon's website, they list a subsonic load in combination. http://data.hodgdon.com/cartridge_load.asp Link to comment Share on other sites More sharing options...
bradandash925 Posted January 28, 2014 Author Share Posted January 28, 2014 I guess I will start there and see if it will cycle my rifle. Link to comment Share on other sites More sharing options...
mic2377 Posted January 30, 2014 Share Posted January 30, 2014 I have used H4198 but not IMR 4198. I believe they are fairly similar though. 11.0 gr would cycle my 16" pistol-gas barrel with a suppressor. You may find that loads will be compressed using a stick powder like this. Link to comment Share on other sites More sharing options...
rjacobs Posted January 30, 2014 Share Posted January 30, 2014 Which Hornady 208g? AMAX or Match? 4198 works(shouldnt be a big difference between I and H), but like mic2377 said, they might be compressed. You might throw a charge and then measure how far up the case it goes with a small dowel rod then see if you have enough room to seat the bullet from there. I dont have any 4198 right now otherwise I would go do that for you and see. A1680 works well for subs because its a ball powder that has very low loft. Link to comment Share on other sites More sharing options...
bradandash925 Posted January 30, 2014 Author Share Posted January 30, 2014 Thanks for the advice. Link to comment Share on other sites More sharing options...
bradandash925 Posted February 1, 2014 Author Share Posted February 1, 2014 (edited) I made some test rounds here is what I made: 5 rounds-OAL 2.250, 208gr Hornady Amax, 11.0 gr IMR4198 5 rounds OAL 2.250, 208 gr Hornady Amax, 11.4 gr IMR 4198 5 rounds OAL 2.255, 208 gr Hornady Amax, 11.4 gr IMR 4198 5 rounds OAL 2.255, 208 gr Hornady Amax, 11.0 gr IMR 4198 5 rounds OAL 2.240, 208 gr Hornady Amax, 11.0 gr IMR 4198 5 rounds OAL 2.240, 208 gr Hornady Amax, 11.4 gr IMR 4198 I will let you all know the results I am going to shoot these sometime this week. Edited February 1, 2014 by bradandash925 Link to comment Share on other sites More sharing options...
rjacobs Posted February 2, 2014 Share Posted February 2, 2014 Thats a touch long for the 208g AMAX. Might have feeding issues depending on the mag you use. I load to the recommended 2.120 for the AMAX. Link to comment Share on other sites More sharing options...
Dawgfish Posted February 8, 2014 Share Posted February 8, 2014 Lots of folks who reload will mark the ogive of the bullet where there is a diameter of 0.25", and mark that with a sharpie. Then they will seat the bullet to the point where it lines up with the forward internal ridge of the magazine. For a .223/5.56 round, this ridge is where the case neck is. This aligns the cartridge/bullet for smooth feeding. Seating the .300 BO bullet out to magazine length will cause issues when loading more than a few rounds, as the internal ridge will cause the cartridges to stack improperly. Give it a test on a 30 round mag. Hope this helps. Link to comment Share on other sites More sharing options...
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