I bought 1000 of these a while back. Haven’t gotten the accuracy I was hoping for yet.
Been working on loads for 2 different ARs and a Tikka Lite. All 3 rifles have been easy to find a < MOA group with a variety of bullets and weights.
Best 5 shot groups from each rifle with the 55 SP Horndays (w/cannelure) have been between 1.5 and 2 MOA.
Anyone having these shoot as well as Sierras, Vmaxs, NBTs, etc?
I like the price and hear they do well on game, but I’d like to get a little better accuracy out of them.
Holston, have you considered a different powder, like AR Comp? That is one of my favorite powders, and I've seen it locally again. Like I said, I loaded up a little the other day. It has been snowing almost constantly here the last couple days though, so I could not go out until today. It was a little windy, but at least it was not snowing!!!
Anyway, I know you were talking about 10 shot groups. I did my usual routine for load development, and started off with some 5 shot groups. For starters, those tell you enough to get you going in the right direction. I'll load up some more of the ones that shot the best, and re-test. Then I'll shoot a couple 10 shot groups at that time. Keeping in mind, I don't like to waste a lot of components, trying to figure out a load. It's just not necessary.
Now, if you remember, in an earlier post, I said If I shot consistent 1.25 moa 10 shot groups with that bullet, I'd be done with load development. What I've found is you just don't get match grade type consistency with the 55gr Hornady sp bullet. Here's how today went:
First 5 shot group. Cold clean barrel. :
Last group shot. Only tested 5 charge weights and 1 seating depth. Loaded to mag length for AR15. Max book load (24.8gr.), loaded at 25 grains:
Charge weights were 23, 23.5, 24, 24.5, and 25 grains. Bullets shot to find a decent load: 25. Will confirm with 10 shot groups. That will tell me more of what I want to know.
Winds:
All data written on the targets above. I'm pretty sure the 25gr load will shoot into about 1.25 moa for 10 shots. I'll load up more, and shoot some to verify. That powder is one you may want to consider. It is generally very forgiving, and easy to work up a good load with. It produces some very consistent loads, in my experience.
You say the best you are getting with your 55's is 1.5-2 MOA groups for 5 shots, in the above post. What I shot today, in high winds shows you can get much better than that by using a different powder. Your other post was stating 1.8 moa groups for 10 shots in your AR's with a different powder, and slightly better with your Tikka. Those groups can also be bested with AR Comp, I believe.