RMR Bullets Home › Forum › General Reloading Discussion › I am liking the 69 RMR in 223 Remington loads
- This topic has 26 replies, 5 voices, and was last updated 4 years, 3 months ago by
Kevin Rehm.
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April 3, 2022 at 8:13 am #422768
Robert Nichols
ParticipantGood Morning to you as well. Funny thing. I have a Fatboy Motorcycle (Harley) with a license plate of MYFTBOY. FYI.
Reloading and Marksmanship together are an Art and a Science. When I first started reloading, I just wanted to hear the gun go bang. Over the last 25yrs, I\’ve studied enough material to get a degree in it. The more you shoot the better you get, but you have to be able to differentiate the difference between the shooter and the ammo. I have good days and bad days, ammo is the same.
I have found that most all powders fit for a particular caliber can arrive at good ammo. Some can be awesome ammo. However, there are soooo many factors that work together to get those groups down to 1/2 to 1/4 MOA. Remember, 1MOA is damm good shooting. It starts with good components. Let me give you an example. If you take a pile of range brass (different headstamps), size it, prime it, fill it with powder with a load recommended in a manual and top it off with a decent bullet, and then run it through a chronograph, you will find that the velocity varies dramatically ( ~ 150 fps, tested). Now, if I buy Nosler, Norma or Lapua in bulk, separate cases by weight and run-out (case neck thickness), uniform the primer pockets and flash holes, seat the primer .002 from flush, use some high end bullets, choose a bullet profile that works well in your barrel, perform ladder testing at .2 to .3gr increments to find the velocity node (which means the spot that has a dramatically reduced velocity spread), and find the seating depth the produces the best accuracy, you will arrive at ammo that has the capability to shoot 1/4 MOA with velocity spread of 15fps and a STD 4.4. The difference between these two sets of ammo is that you can put them both in a vise and shoot them at 500yds and the first group will string vertically (8 to 10 inchs) and the second will be 1/4 to 1/2 MOA. Thats just taking the shooter out of the equation. You also have to have the right tools to measure things.
That said. I bought the RMR 69gr bullets because of the price. I developed the load I mentioned with 69gr SMK. It shot exceptionally well. People use the SMK because it shoots very well in most rifles, and that\’s because it has a forgiving, Tangent, bullet profile. I dont know what the bullet profile is for the RMRs, but it looks like its closer to Tangent??? I will have to test for accuracy and compare the two. Keep in mind that the rifles I am talking about above are high end long distance rifles that I built for that purpose. The 5.56, AR 15, is not build for accuracy. Its designed to get a lot of high velocity rounds down range fast. If you get a AR 15 to shoot 1 MOA, call it a day and move on with your life.
April 3, 2022 at 8:55 am #422784Fatboy
ParticipantWell sir I guess today is the day I move on with my life!! I just found the sweet spot I\’ve been searching for and this morning I got the results I\’ve been looking for. Im not trying to win any contest. Just some self gratification and hoping I didnt waste my money. I also have a fatboy 2009 custom build by yours truly. I am now liking this bullet and will be making a bigger purchase soon!!! Way to go RMR!!!
April 3, 2022 at 8:57 am #422786Fatboy
ParticipantAnd thank you for all of your input its guys like you that make my trying alot easier and I greatly appreciate that. Keep the rubber on the road my friend
June 7, 2022 at 10:16 pm #435325Kevin Rehm
ParticipantAnyone got pics of these bullets in ballistic gel? Id like to see what they look like abd how well they expand. Ty
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