I’m shooting Star Line brass. Maybe “fire forming” wasn’t the best choice. But after reading several sites it recommends to fire once then proceed to reload as normal. It is supposed to increase the internal capacity of the brass.
This is true but there is no reason not to develop a viable, high-performance load with new brass. IMO, you are just wasting time and resources if you don't. Then when all your brass is once fired, adjust your load for the resized brass (with 0.003-0.004" shoulder set-back - not back to SAAMI). My updated recipe in fired, resized brass can be as much 0.3 to 0.5 grains more. This typically brings the velocity back up to the load you developed in new brass.
Caution - a load/power charge developed in resized brass cannot be used in new, unfired brass because of risk of over-pressure. This also applies if a developed load is near max pressure in one type of manufacturer's brass - it may cause over-pressure if loaded in a different manufacturer's brass, new or resized.
After firing 100 rounds today I came to realize that. Lol. I saved the other 400 for another time. Now I start working on some 90 grain and 115 grain loads. That should keep me busy till the 90’s come back in stock on RMR site.
If you want maximum performance from your 130's you should use S&B brass. It is the strongest and has the largest case capacity.
Federal and Starline have the lowest case capacity in 6.8 brass.
I'm not saying they wont work. There's just more performance to be had.
That is how far back you setup your resizing die to move the shoulder. This gives you the maximum case capacity and lowest chamber pressure while maintaining reliable feeding in an AR. Set it back anymore or back to SAAMI as the die instructions likely detail and you defeat the benefits of fire-forming to your chamber.
This question may have been answered before but after searching several years ago and finding none, are their any solutions commercially available for the 6.8 cal. rifle? I am finding some great speed loaders for the AR 15 in 556 but understand they do not work for 6.8, has anybody been able to...
Looking to add to the stockpile. Just curious, since these come primed from CBB, what kind of processing do they require. I can't do anything but chamfer the case mouths until they are fired. Do you neck size the new stuff and then expand to get consistent neck tension?
Went out to the range yesterday anxious to fire my first batch in a couple of years. No chrono yet, basically wanted to get a 100 yd zero and trigger time with my new build project. This was my second time out with it. Rifle functioned as it should, love the ARP 18” 5R SS barrel. The Swampfox...
I have a 6.8 Pistol with an Arp 10.5 inch barrel I put together a
while back and quite a few of the XM68GD ammo but I am thinking that that I would like a different type of ammo for home defense ,something that would be less likely to penetrate the walls of a double wide trailer.
Midsouth shooters supply in stock atm.
Also at Lg outdoors but more $.
Good on ammo, but my supply of reloading supies is low. Been looking...