That is a very good price. Thank you, I have it in my cart right now for back order, which is fine I can wait. @Loco I will research the H4895
What are your thought on the IMR4064...its plastered all over the internet.
Also looking to produce reloads with 150g bullet in the 2800fps muzzle, I want enough gas to cycle my bolt effectively. Had some under powered stuff that sucked.
Thank you sir! Once again super helpful and accurate information. This site is just the best on the net.Figure things this way. When we measure powder for loading we use gr (Grains) as the unit of measure. The powder here in the US is sold in Lbs (Pounds) as the unit of measure. Just as a reference there are 7,000 grains in 1.0 Lb. A typical .308 Winchester load under a 150 grain FMJ (Full Metal Jacket) bullet will be between 38 and 44 grains of IMR 4895 powder. Taking a maximum load and adding a grain we can figure 7000 / 45 = 155 rounds so a 1.0 Lb can of IMR 4895 should yield about 155 loaded rounds. It will always be 7,000 divided by your load data with both expressed in grains to get how many rounds you can load.
Ron
I'm a big fan of IMR 4064 for ally full power cartridges. I haven't loaded 308 with it in a while but I do load a good bit of 7.65x53 and that's right in the same neighborhood as 308.Walked into my local Walmart here in Vancouver, WA and checked their always depleted ammo shelf and saw some reloading dies. I started looking around and saw Large Magnum and Small Magnum primers and then there was 10 100ct. boxes of Winchester Large Rifle primers, so I snagged them. I would have never thought to look at Walmart for reloading supplies. I have my Dillon .308 die set and primers, now I need some brass and powder. Any advice on .308 AR-10 powder for new re loader?
2800fps from a 16” barrel is not likely , I think Varget & CFE 223 might get you with in 50fps but those have a slower burn rate then the 4895’s which will put you way over gassed . An Adjustable gas block could help with that but those slower powders really are better suited for the heavier bullets
With the powders being discussed. Id think 2650 to 2700 may be more realistic from a 16” barrel
I’m getting 2760fps using over max load of H-335 from my 18” AR-10 . Which I now plan to reduce that charge by .5gr to put me right around max pressure resulting in a likely 30fps reduction or 2730fps
You may want to keep something in mind. Your maximum load for a gas gun like an AR 10, M1A or .308 chambered M1 Garand will not be the same maximum load you might run in a longer barreled bolt action rifle. While the load data you posted 45.5 grains of IMR 4895 may be fine and well in a bolt gun and with enough barrel may get you up to or above 2800 FPS the same may not be true of a shorter barreled gas operated rifle like an AR 10 and you may reach a point where you are beating your rifle up. Also, there is no gain in pushing a load when frequently the best accuracy is achieved before a maximum load. Choose a powder and bullet combination and work up. That is what I would suggest anyway. You will also find and likely conclude that published load data is a guideline and min and max loads vary book to book.Full power charges, sounds appealing. I do have a goal in mind. To push a 150 or 155gn at 2800fps out of a 16 inch AR10
One thing to remember is. If your trying to go fast in an ar platform. You will shred brass. The powders that give you the highest velocity usually work best with an adjustable gas block.
If you watch a few slow motion videos of rifles like the AR 10 ejection process you will likely see why things like dinged case necks and case mouths are not all that unusual. Here is one such example. Shown in slow motion towards the end of the video. My own observation is for the most part on my AR 10 which was originally an 18" barrel and now a 26" match barrel is I get good ejection right about 4 O' Clock but with some loads I get the dinged case mouths. The rifle is about a 25 year old Armalite before everyone was making them. Anyway, gas guns like the M1A, M1 Garand and AR 10 have a pretty violent ejection process, note how the case mouths in the video slam back on the action. Different powders, different pressure curves, different ejection is how it generally plays out.Interesting, I have noticed the necks of my ejected brass are marred up. More than my AR15 brass. But I do have the KAK double extractor bolt in my BCG, I was having extraction issues. Now I don't. I inspected the single extractor after I replaced it and it looks good and the extractor is still ridged and stiff just like new?