I tried everything in mine an settled on 680. I have no idea if that is generally a good powder or not. It meters well, for sure. handy if you have to make a lot of ammo.
I would try 11 to 12 gr of 2400, too.
.22 K-Hornet CZ 527 Accuracy
- Thread starter Bad Bob
- Start date
I tried everything in mine an settled on 680. I have no idea if that is generally a good powder or not. It meters well, for sure. handy if you have to make a lot of ammo.
I would try 11 to 12 gr of 2400, too.
I thought I read somewhere that 680 had been discontinued, can you enlighten me? That is one I have not tried, I will try it if it is still available. When loading for a shoot I generally load 500 - 1000 at a time through a measure so yes, smooth metering is very important also.
It may be discontinued. Maybe AA1680 is the same powder?
My experience with it and the 22 is 40 years ago.
BattleRife
CGN Ultra frequent flyer
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That is my understanding.
Yes, the Varmint Grenades were #2, maybe even tied for #1 with the 40 V-Max in the accuracy department. I settled on the 40 V-Max because of their superior performance in the wind and at longer ranges.
All the research indicates that the .22 Hornet is not known for it`s accuracy. The K-Hornet is supposedly somewhat better, but still not known as an inherently accurate cartridge. I`m thinking that expecting a K-Hornet to produce accuracy comparable to a well built / tuned varmint rifle in .204, .222, or .223 is an exercise in futility. Be that as it may, it still is a hell of a lot of fun to shoot.
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Tried the 45 Hornady "Hornet" bullets, they were no hell. I think you may be right in that 5/8 may be the accuracy "limit" for this cartridge. I was looking initially for the magic 1/4 - 5/16" level but soon realized it would never do it, so then I set my goal for 1/2" and it has never achieved that either. 5/8 is about it, but I suppose in all reality that is adequate for it`s purpose.
I love the cartridge but it just p###xx me off that it holds the distinction of being my least accurate gun. I have been reloading for a looong time and this is without a doubt the most challenging cartridge I have ever come across.
daddylonglegs
CGN Regular
- Location
- Big River, Saskatchewan
I once owned a Sako 78 in 22 Hornet. Damn near drove me insane trying to reload for it. It would put 5 rounds of factory Winchester 40 gr hollow points in to less than 1/2" at 100 yds, but I could not match this with any reload I tried. Finally tried Winchester 680 ball powder. That turned the trick, and I could duplicate the factory Winchester accuracy. This gun did not like any other powder. Interestingly, it would not shoot Remington or any other brand of factory ammo worth a tinker's damn. I recall an article by Ross Seyfried who claimed that the 22 Hornet was the fussiest cartridge he had ever reloaded. He owned 3 different guns in the same chambering, and had developed a good load for each, but the 3 loads were all different and no two of his guns would shoot the same load well.
There is no doubt that this is the fussiest little bu###x that I have ever reloaded for. Every .224 and 6mm varmint rig I have ever owned would do 1/2" or less with no drama. You can pretty much throw anything at a good .223 or .204 and expect better. But being a true "reloader" I do sort of like the challenge, it is afterall part of the fun.
daddylonglegs
CGN Regular
- Location
- Big River, Saskatchewan
It would be worth it to buy 1 lb. of Win 680 ball powder, to see if it will help, as it did in mine
I have a few hornets and a K hornet. Primers are critical. Mag primers really affect accuracy, well documented, just google. I suspect the pressure spikes you are seeing are due to mag primers. Mag primers really affect a small case like the hornet. Remington 6 1/2 primers were designed for the hornet. My go to load is Lil Gun and Remington 6 1/2 primers.
Be very careful with this powder. It is fairly fast burning and in that tiny case a small change makes a big difference. Work up to max charge carefully. You might not see pressure indicators until you go to seat a new primer and it falls out. All of this happened to me in a CZ527 but with a 17 Hornet. It is also temp sensitive. So on a cool day it may be fine but if you take it out on a hot day and leave your ammo in the sun it could be dangerous. Remember this is a tiny cartridge and small differences that would be negligible in a larger centre fire will make a much larger diff in the tiny Hornet.
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I use a Calhoon single shot adaptor and seat the bullets at the lands. With the adaptor you just drop the cartridge in any old way, don`t even have to look, feeds perfect every time. Real slick piece. I find the machine work, action and especially the trigger quite acceptable on the 527, just would like to tighten up the groups a bit.
