beantownace Posted July 14, 2020 Share Posted July 14, 2020 Hey all, I purchased a new M4 beauty and about to take it to the range first time next week. So I understand that the M4 likes high FPS ammo and for good reason. I dislocated the shoulder a few years back ski accident so I want to ease into the first rounds to get a feel for 00 buckshot with it. Any idea will any of the Winchester AA work such as the light load at 1145 FPS cycle? From what I am gathering it really needs 1200 FPS and above. I have a small pack of Hornady 1345 FPS I believe I am sure that will cycle but ammo hard to find lately. Looking for an option before I go shopping this week at Bass Pro etc. Slowly make my way up to slugs.... ;)... Thanks for any info from non rookies on here. Quote Link to comment Share on other sites More sharing options...
mtstream Posted July 14, 2020 Share Posted July 14, 2020 The first time out I had a few issues with light loads but once the gun had some rounds down it I've not had a problem since. I've mag dumped Federal LE low recoil which is only 1145fps without issue and have run enough through my M4 to be comfortable with it as my self defense load. I would suggest not getting discourage if it's picky to begin with and see how it performs once it's done some work. 1 Quote Link to comment Share on other sites More sharing options...
jimbo45 Posted July 14, 2020 Share Posted July 14, 2020 I routinely run 1145 fps #7.5 1 &1/8 oz through both my m4's. You might have some hang ups in the very beginning but might not. 1 Quote Link to comment Share on other sites More sharing options...
Sigma05 Posted July 14, 2020 Share Posted July 14, 2020 After breaking in my M4 I can run pretty much anything. The one I run the most in classes/matches/training is some low brass Winchester #6. 1 Quote Link to comment Share on other sites More sharing options...
D'zaster Posted July 14, 2020 Share Posted July 14, 2020 Mine has run fine without a hiccup right from the get go. 1 Quote Link to comment Share on other sites More sharing options...
beantownace Posted July 14, 2020 Author Share Posted July 14, 2020 Thanks all I appreciate it. I may start out with Federal Target Load 8 Shot 1200 FPS. I believe that is birdshot essentially but should be low recoil. Quote Link to comment Share on other sites More sharing options...
jimbo45 Posted July 15, 2020 Share Posted July 15, 2020 Yeah that shouldnt be bad at all. Quote Link to comment Share on other sites More sharing options...
NCswamp13 Posted July 27, 2020 Share Posted July 27, 2020 Like most have said, mine had a breaking in period of about 100rnds of full powered buckshot, now it eats anything. Quote Link to comment Share on other sites More sharing options...
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