ROLEXrifleman
Master
Went to test out my 7” Beowulf SBR build the other day and also tested out my first batch of loads. I loaded 25 rounds but only fired 24. All 25 rounds were loaded with:
Winchester WLP primers
39 grains of H110
Berry’s 350gr bullets
Once fires AA brass from OEM ammo
I was experimenting with COAL so 20 were seated to 2.200” and 5 seated at 2.155
I loaded 3 rounds for my first magazine. 2 of the 2.200” and one of the 2.155”. All three shot with no issue. Picked up the brass and noticed no signs of overpressure. Figured all was good so me and my brother shot the remaining 21 rounds. At the end of the day I asked my brother if he felt any of the fireballs close to his face and he said no. I told him I thought I felt a couple right on me! I then reviewed some video he shot. The following are stills from that video:
1) Right before the round goes off, all is good.
2) And this is why we choose the .50
3) Fireball starting to move forward
4) Fireball is gone and now what appears to be the spent brass hitting the shell deflector can be seen. I circled it in red.
5) The spent piece of brass is now engulfed by the beginning of a secondary explosion captured on the video. I used a red arrow to point to it in case it wasn’t obvious.
6) Flame peaks. Red arrow again used to point it out.
7) Residual flame can still be seen along with brass now flying forward.
8) Last of the flame can be seen along with clear image of brass.
9) The rear ends of the rounds fired showing primers.
SO….. 24 rounds fired, my brother felt nothing and I swear I felt the flames 3 times. There were a total of 10 rounds caught on camera and this is the only occurrence of this happening. The first three rounds fired from the gun, as stated above, were two at 2.200” and one at 2.155” and I know for a fact I did not feel the fireball then and those 1[SUP]st[/SUP] three rounds were not any on the ones I have video of.
And what are the forums’ thoughts about the secondary explosion? Powder issue, seating issue?
Thanks in advance for any info you can provide.
Winchester WLP primers
39 grains of H110
Berry’s 350gr bullets
Once fires AA brass from OEM ammo
I was experimenting with COAL so 20 were seated to 2.200” and 5 seated at 2.155
I loaded 3 rounds for my first magazine. 2 of the 2.200” and one of the 2.155”. All three shot with no issue. Picked up the brass and noticed no signs of overpressure. Figured all was good so me and my brother shot the remaining 21 rounds. At the end of the day I asked my brother if he felt any of the fireballs close to his face and he said no. I told him I thought I felt a couple right on me! I then reviewed some video he shot. The following are stills from that video:
1) Right before the round goes off, all is good.
2) And this is why we choose the .50
3) Fireball starting to move forward
4) Fireball is gone and now what appears to be the spent brass hitting the shell deflector can be seen. I circled it in red.
5) The spent piece of brass is now engulfed by the beginning of a secondary explosion captured on the video. I used a red arrow to point to it in case it wasn’t obvious.
6) Flame peaks. Red arrow again used to point it out.
7) Residual flame can still be seen along with brass now flying forward.
8) Last of the flame can be seen along with clear image of brass.
9) The rear ends of the rounds fired showing primers.
SO….. 24 rounds fired, my brother felt nothing and I swear I felt the flames 3 times. There were a total of 10 rounds caught on camera and this is the only occurrence of this happening. The first three rounds fired from the gun, as stated above, were two at 2.200” and one at 2.155” and I know for a fact I did not feel the fireball then and those 1[SUP]st[/SUP] three rounds were not any on the ones I have video of.
And what are the forums’ thoughts about the secondary explosion? Powder issue, seating issue?
Thanks in advance for any info you can provide.
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