Ok,
First outing with the new Canyon Rifle chambered in 338 Edge+P. The purpose of the day was to initial load development. I started off at 93 grains of H1000. First string at 93 grains yielded 2882, 2879, and 2836 fps. I checked each case after firing, no ejector marks and the primers looked normal. Bolt lift was as if there were no case in the chamber. The velocity seemed a little faster than what I expected but, everything else appeared normal. Not sure what happened to the 2836...
I moved to the 94 grain loads and they yielded 2879, 2901, and 2895 fps. Again no ejector marks, bolt lift was no change, but somehow wound up with a pierced primer. Whether I just flat missed it or, perhaps the glare was just right. Fact is I didn't see the pierced primer at the moment.
I then moved to the 95 grain loads and the first round yielded 2937. Again, no ejector mark, the primer appeared normal and no change in bolt lift although I did notice the trigger pull felt a little stiff. I chambered the next round and couldn't get the trigger to release the firing pin. After a bit of head scratching I finally saw the pierced primer and realized I had probably filled the firing pin chamber with crap. This terminated the test session until I can figure out what happened.
Perhaps I'm not reading the primers correctly but there are no ejector marks in the test cases and bolt lift was a breeze. Please take a look at the pictures and weigh in on what might have happened. The one on the far right of pic 2 is an unfired case from the same batch.
Here's a little more about the loads and process aside from powder.
338 Edge+P
Remington 300 RUM virgin brass
Necked up to 338 and neck turned just enough to clean up neck thickness variations
Debur flash hole
Trimmed to square the case mouth and annealed
Full length sized with a .363 bushing. Yield .0015 - .0020 neck tension
300 grain SMK
.010 off the lands
OAL 3.240
CCI 250 Primer
H1000 thrown to -.3 grain from my Lyman 1200 DPS3 and trickled up on my Redding No. 2 balance beam
First outing with the new Canyon Rifle chambered in 338 Edge+P. The purpose of the day was to initial load development. I started off at 93 grains of H1000. First string at 93 grains yielded 2882, 2879, and 2836 fps. I checked each case after firing, no ejector marks and the primers looked normal. Bolt lift was as if there were no case in the chamber. The velocity seemed a little faster than what I expected but, everything else appeared normal. Not sure what happened to the 2836...
I moved to the 94 grain loads and they yielded 2879, 2901, and 2895 fps. Again no ejector marks, bolt lift was no change, but somehow wound up with a pierced primer. Whether I just flat missed it or, perhaps the glare was just right. Fact is I didn't see the pierced primer at the moment.
I then moved to the 95 grain loads and the first round yielded 2937. Again, no ejector mark, the primer appeared normal and no change in bolt lift although I did notice the trigger pull felt a little stiff. I chambered the next round and couldn't get the trigger to release the firing pin. After a bit of head scratching I finally saw the pierced primer and realized I had probably filled the firing pin chamber with crap. This terminated the test session until I can figure out what happened.
Perhaps I'm not reading the primers correctly but there are no ejector marks in the test cases and bolt lift was a breeze. Please take a look at the pictures and weigh in on what might have happened. The one on the far right of pic 2 is an unfired case from the same batch.
Here's a little more about the loads and process aside from powder.
338 Edge+P
Remington 300 RUM virgin brass
Necked up to 338 and neck turned just enough to clean up neck thickness variations
Debur flash hole
Trimmed to square the case mouth and annealed
Full length sized with a .363 bushing. Yield .0015 - .0020 neck tension
300 grain SMK
.010 off the lands
OAL 3.240
CCI 250 Primer
H1000 thrown to -.3 grain from my Lyman 1200 DPS3 and trickled up on my Redding No. 2 balance beam
