Projectile RPM limits...

[MISSED]

I refer to the New Years resolution thread.

[Con]

I refer to the New Years resolution thread.

He claims that the decision having been made in 2017 absolves him of that statement regarding 2018.
Cheers...
Con

[Waldo]

C'mon Con, join the ranks of the 5.6x57 brigade

You know you want to

[justjeff]

Guys,

I know SMK 6mm 107 gr will blow up at 320 000 rpm, nearly blew old Trev up with one at the range while he was in the butts. Not a scratch on the paper, but a big grey mist at about 980 yds. Also blew some up at about 50 yards. I used to have a 100 yd target with a perfect little comet trail off the side of the hole from one too. So I have ditched the 8 twist for the faster cartridges and gone to 9 twist to get back under the 300 000 mark.

Jeff

[mistit]

Con I have had 2 fast twist 22 cal barrels on a Sako trg 22 that I did with the intention of shooting 75 vmax,s
They shot well at around 3200 out of a 22250 ackley , by no means bench rest accurate ether, but plenty good enough for varmints ,3350 would see 1/10 come apart after about 20-30 rounds on a clean barrel , however I did a 12 twist on my Barnard with the intention of shooting 53 vmax,s
Bc 290 and at 4150 -4250 they are benchrest accurate to 550 yds and very deadly in anything up to reasonable conditions
But I have the urge to try some 80 grain vmax,s so a few weeks back I ordered an 8 twist flutted light varmint maddco
Will be chambered in my all time favourite 220 ackley
Yes I no they may not hold together at the available velocity but it’s time again to give it another go
On a side note nothing in 22 cal kills like a 75 vmax either

[trevort]

I have a video and still shot of a friend shooting his 20-250AI shooting 55gn projectiles and watching them turn to grey mist cloud at about the 20m mark.

This is the saddest post I have ever read


Sent from my iPhone using Tapatalk

[trevort]

Con I have had 2 fast twist 22 cal barrels on a Sako trg 22 that I did with the intention of shooting 75 vmax,s
They shot well at around 3200 out of a 22250 ackley , by no means bench rest accurate ether, but plenty good enough for varmints ,3350 would see 1/10 come apart after about 20-30 rounds on a clean barrel , however I did a 12 twist on my Barnard with the intention of shooting 53 vmax,s
Bc 290 and at 4150 -4250 they are benchrest accurate to 550 yds and very deadly in anything up to reasonable conditions
But I have the urge to try some 80 grain vmax,s so a few weeks back I ordered an 8 twist flutted light varmint maddco
Will be chambered in my all time favourite 220 ackley
Yes I no they may not hold together at the available velocity but it’s time again to give it another go
On a side note nothing in 22 cal kills like a 75 vmax either

Sent from my iPhone using Tapatalk

[Con]

Mistit,
Maddco still looking at March for 1:8" barrels?
Cheers...
Con

[frl0173]

I have a video and still shot of a friend shooting his 20-250AI shooting 55gn projectiles and watching them turn to grey mist cloud at about the 20m mark.

This is the saddest post I have ever read


Sent from my iPhone using Tapatalk

Don't cry mate, at least he figured out why the Bergers were vaporizing, exceeding the max recommended velocity according to Berger.

[mistit]

Mistit,
Maddco still looking at March for 1:8" barrels?
Cheers...
Con

I ordered an 8 and 14 both March he said

[Con]

Mistit,
Maddco still looking at March for 1:8" barrels?
Cheers...
Con

I ordered an 8 and 14 both March he said

Yep, was told 22cal barrels in March.
Cheers...
Con

[trevort]

I have a video and still shot of a friend shooting his 20-250AI shooting 55gn projectiles and watching them turn to grey mist cloud at about the 20m mark.

This is the saddest post I have ever read


Sent from my iPhone using Tapatalk

Don't cry mate, at least he figured out why the Bergers were vaporizing, exceeding the max recommended velocity according to Berger.

I’ve got them going at 3880. Where does Berger say to stop?


Sent from my iPhone using Tapatalk

[dashooter]

I have a video and still shot of a friend shooting his 20-250AI shooting 55gn projectiles and watching them turn to grey mist cloud at about the 20m mark.

This is the saddest post I have ever read


Sent from my iPhone using Tapatalk

Don't cry mate, at least he figured out why the Bergers were vaporizing, exceeding the max recommended velocity according to Berger.

I’ve got them going at 3880. Where does Berger say to stop?


Sent from my iPhone using Tapatalk

Should be able to get to 4200 fps and still hit rabbits at range Trev based on testing done in September. That’s out of a 1:9 twist barrel.

[mistit]

For those that may pick up on it
It is meant to say amax not vmax in my previous post

[trevort]

I have a video and still shot of a friend shooting his 20-250AI shooting 55gn projectiles and watching them turn to grey mist cloud at about the 20m mark.

This is the saddest post I have ever read


Sent from my iPhone using Tapatalk

Don't cry mate, at least he figured out why the Bergers were vaporizing, exceeding the max recommended velocity according to Berger.

I’ve got them going at 3880. Where does Berger say to stop?


Sent from my iPhone using Tapatalk

Should be able to get to 4200 fps and still hit rabbits at range Trev based on testing done in September. That’s out of a 1:9 twist barrel.

You talking at about 55 gn 20 cal pills?


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