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I just picked up the latest edition of the Nosler handbook and was going over some of the loads they suggest. Has anyone found their load sweet spot they’re willing to share?
I’ve tried Varget, IMR 8208xbr and CFE223 with the 64gr BSB round and Nosler’s Accuracy load of 26.0gr of CFE223 with a COAL of 2.175" definitely stood out from the other test loads. I ran the CFE load through my chronograph and got 2849 fps as a 10 shot average and that was using a 16" barrel. I am going to work on that load just a little more but overall I liked it. I do plan to try some H322 powder but it may not be until next month.
I heve not shot an animal with these yet, but I have shot many animals with the Speer 70gr round nose at the speed you are getting. The speer bullet will break both shoulders of a deer and exit. So the bonded should do even better, I will find out this hunting season.
I’d like to find some of that CFE.
Seems it propels this projectile the closest to 5.56 pressure than the others listed.
I don’t have a chrony, so I’m eager to see if anyone gets these flying at 2900fps or higher.
Interesting to note all of the data for this bullet , in the 7th edition Nosler, is from a 26" barrel. The speeds were not fantastic. Perhaps this bullet does not need Max speeds to perform.
At this point I would maybe suggest moderate speed chasing… remember half the bullet is closer in construction to a Barnes solid copper or the Trophy Bonded Bear Claws.
That CFE worked GOOD for ss109 bullets. 26.0 had them going nearly 3000 fps. Just about right. I don’t like running overpressured 5.56 loads, but I like a hot .223 load.
Understood.
You are trying not to stress you brass out too much.
But Winchester must be spitting them out at 2935 for a reason.
And Doc says that the RA556B load is one of the best.
I’m just looking to not spend $35 a box for them.
I would be interested with your load data and chronograph results when you try out the H322 powder. I have some of the Nosler 64 gr bullets on order, but I am short on prepared brass at the moment so it might be a bit longer than a month before I am ready to start testing with the H322.
Nah… Ammo too hot like XM193 is on the outer edge of the smooth reliable cycle rate. And I’ve seen ammo that hot blow out primers and shut the gun down.
My initial load development data for these bullets from last Tuesday.
16" BCM CL midlength upper. Tula SRM primers for all loads. Crap FC brass. Bullets seated to cannelure.
N135- 23.9@2878fps(pushed out 3 primers, too hot) My starting load for the N135 was 23 grains and it pushed 2814fps. I did lose 2 primers at 23.6 as well but I initially suspected loose primer pockets as I remembered some loose pockets when seating primers. 23.6 went 2840fps. Swipes tell me loose pockets aren’t the only issue.
AR-Comp- 23.4@2781fps(no sign of pressure; plan on loading up to 24 and see what happens)
XBR- 23@2756fps(no sign of pressure; plan on loading up to 23.6)
TAC- All groups were trash as far as group size were concerned and nothing special in the velocity