birch
07-21-2013, 09:23 PM
Well, I finally got some free time and decided to load up some plain base 225107 (NOE group buy mould) .37gr in my .22 Hornet. The Hornet is a CZ 527 American with a 1/16 twist. It is a 1" MOA gun with Herters 40gr JHP with 12.3gr of 1680. I would happily shoot those all day long, but at 20 dollars per 100 (if I can find them), I hope to find a PB load that it likes.
I got in on the group buy and bought a four cavity with two being gas checked.
The First Loads:
I recently found a thread that mentioned 3gr. of Titegroup for the .37gr Lyman version of the 225107 NOE mould. It suggests a muzzle velocity of 1300-1400 fps.
Powder: 3gr Titegroup
Boolit: 37gr plain base
OAL: cant remember--next time
Primers: Wolf Pistol
Size: Star .2265 die
Lube: NRA
I full length sized and trimmed and primed once fired Winchester WW brass. I then used a lyman M die for a slight throat flare. I didnt actually use the flare at the base of the extention. I just ran the plug all the way in the case mouth to expand the entire throat a little. I seated the boolit and put a slight crimp on the neck with a Lee collet crimp die.
Results:
Horrible. All rounds were fired at 25 yards on a lead sled. The first three shots grouped at a little under an inch. After that, things got very bad. I fired 25 rounds. The last three shots measured over 7 inches.
I checked the bore of my Cz and found what looked like leading, but turned out to be lube crusted with unburned powder.
My Theory: Poor powder choice/poor primer choice/oversized diameter.
Next time, I think I will try A1680 that works terrific with j-words. I don't think I was getting a hot burn with the wolf primers and the Titegroup. I also think I should try to size down to .225, but this will require the purchase of another star die. Sooo, the next review might be a month or so.
Since I have not seen much data for the recent NOE group buy, I plan on posting my results. If anyone has any info that might be helpful, please post.
I got in on the group buy and bought a four cavity with two being gas checked.
The First Loads:
I recently found a thread that mentioned 3gr. of Titegroup for the .37gr Lyman version of the 225107 NOE mould. It suggests a muzzle velocity of 1300-1400 fps.
Powder: 3gr Titegroup
Boolit: 37gr plain base
OAL: cant remember--next time
Primers: Wolf Pistol
Size: Star .2265 die
Lube: NRA
I full length sized and trimmed and primed once fired Winchester WW brass. I then used a lyman M die for a slight throat flare. I didnt actually use the flare at the base of the extention. I just ran the plug all the way in the case mouth to expand the entire throat a little. I seated the boolit and put a slight crimp on the neck with a Lee collet crimp die.
Results:
Horrible. All rounds were fired at 25 yards on a lead sled. The first three shots grouped at a little under an inch. After that, things got very bad. I fired 25 rounds. The last three shots measured over 7 inches.
I checked the bore of my Cz and found what looked like leading, but turned out to be lube crusted with unburned powder.
My Theory: Poor powder choice/poor primer choice/oversized diameter.
Next time, I think I will try A1680 that works terrific with j-words. I don't think I was getting a hot burn with the wolf primers and the Titegroup. I also think I should try to size down to .225, but this will require the purchase of another star die. Sooo, the next review might be a month or so.
Since I have not seen much data for the recent NOE group buy, I plan on posting my results. If anyone has any info that might be helpful, please post.