johngibbs222
Well-Known Member
- Joined
- Jun 15, 2012
- Messages
- 176
I have an old 1980s Ruger #3 in 223 rem, not had many rounds through it and I spent some time building loads that the gun likes.
So I have barnes varmint grenades ahead of 27.9 grains of cfe 223 in PPU cases touched off by S&B sr primers.
I normally shoot 3 shot groups as this is all I really need but on this occasion I wanted to check the velocity of the reloads I was using. I have a magnetospeed sport and fired 12 rounds downrange, average mv of 3254 with a deviation of 15 fps. Cut a group about 1" with 1 flier that I feel was my fault (I also take credit for putting the other 11 where they went, btw).
Took the chrono off and shot another target, first 3 shots all touching one another then it went belly up, remaining 7 shots just about on the paper and I can feel a spring wanging each time I fired.
I stood up and my blasted bipod fell off, the sling adaptor had pulled the wood out and just detached itself.
Next 10 rounds I fired from a rest and got my 1" group back.
One interesting point, my #3 is a 22" carbine with a heavy barrel and the point of impact didn't change when I removed the magnetospeed, also the first three shots from the second group also went to the point of impact, 2.5" high at 100 metres.
I've ordered up some blind nuts and 5mm sling swivel adaptors so they will be in there permanent, I also have a ruger #1 in 308 and I'll modify the attachment point for that as well.
So I have barnes varmint grenades ahead of 27.9 grains of cfe 223 in PPU cases touched off by S&B sr primers.
I normally shoot 3 shot groups as this is all I really need but on this occasion I wanted to check the velocity of the reloads I was using. I have a magnetospeed sport and fired 12 rounds downrange, average mv of 3254 with a deviation of 15 fps. Cut a group about 1" with 1 flier that I feel was my fault (I also take credit for putting the other 11 where they went, btw).
Took the chrono off and shot another target, first 3 shots all touching one another then it went belly up, remaining 7 shots just about on the paper and I can feel a spring wanging each time I fired.
I stood up and my blasted bipod fell off, the sling adaptor had pulled the wood out and just detached itself.
Next 10 rounds I fired from a rest and got my 1" group back.
One interesting point, my #3 is a 22" carbine with a heavy barrel and the point of impact didn't change when I removed the magnetospeed, also the first three shots from the second group also went to the point of impact, 2.5" high at 100 metres.
I've ordered up some blind nuts and 5mm sling swivel adaptors so they will be in there permanent, I also have a ruger #1 in 308 and I'll modify the attachment point for that as well.