Proof 223 competition contour 1:7 twist

[lycokayaker]

Hey

does anyone have a proof stainless steel 223 barrel for a bolt gun? Was curious what grain bullets it will handle run. Im debating going for a cheap way rather than have my guy cut me a barrel to spec of a bullet


Bill

 

[jzerfoss]

Hey

does anyone have a proof stainless steel 223 barrel for a bolt gun? Was curious what grain bullets it will handle run. Im debating going for a cheap way rather than have my guy cut me a barrel to spec of a bullet


Bill

Mine loves 88s and seems to stabilize 95s fine from a 28" barrel.

 

[lycokayaker]

Mine loves 88s and seems to stabilize 95s fine from a 28" barrel.

Any chance you tried lighter stuff like 55-60

 

[jzerfoss]

Any chance you tried lighter stuff like 55-60

Nope, but I'm sure most bullets will stay together at 223 speeds.

 

[Rob01]

Mines not a Proof prefit but a Proof Comp Contour 7 twist blank that Josh at PVA did a prefit for me and it loves 75 elds. Haven’t shot any light weight bullets through it though. 68grn is the lightest. As mentioned it should do fine with lighter at .223 velocities. There are a lot of 7 twist ARs shooting 55s.

 

[Shiftyk5]

I’ve shot 55gr vmax and 55gr Blitzkings through my 223 proof prefit. Worked really well

 

[Sutherlandsd]

Mine shoots 75gr and 69gr scary good. 88gr it does ok and 52 and 55gr it does ok.

Good barrel and will last forever.

 

[lycokayaker]

Mine loves 88s and seems to stabilize 95s fine from a 28" barrel.

Mine shoots 75gr and 69gr scary good. 88gr it does ok and 52 and 55gr it does ok.

Good barrel and will last forever.

When you guys shot these heavier bullets did you have mag feeding problems at all?

 

[Niles Coyote]

When you guys shot these heavier bullets did you have mag feeding problems at all?

my proof has seen a diet of 55fmj for break in and then a light load of 62 bthp's for 100 yard barricade practice and 75 ELD's loaded to jump .035" for long range practice. zero issues feeding... that said I have had issues with snap caps feeding with polymer mdt's, the live rounds have been fine though.

 

[lycokayaker]

my proof has seen a diet of 55fmj for break in and then a light load of 62 bthp's for 100 yard barricade practice and 75 ELD's loaded to jump .035" for long range practice. zero issues feeding... that said I have had issues with snap caps feeding with polymer mdt's, the live rounds have been fine though.

sweet was thinking about those eld rounds for a trainer and double duty for coyotes. What size groups were you getting with the 75 grain rounds

 

[Niles Coyote]

sweet was thinking about those eld rounds for a trainer and double duty for coyotes. What size groups were you getting with the 75 grain rounds

 

[lycokayaker]

View attachment 7988083

Awesome thanks for sharing

 

[Niles Coyote]

That powder worked well, but was slow in this cartridge so I wouldn't run out and buy any based on that,

 

[lycokayaker]

I was going to try varget

 

[jzerfoss]

When you guys shot these heavier bullets did you have mag feeding problems at all?

I use heavily modded accurate mags.

 

[lycokayaker]

I use heavily modded accurate mags.

What did you mod?

 

[jzerfoss]

What did you mod?

 

[lycokayaker]

View attachment 7988138

Ah gotcha. What grain projectile is that?

 

[jzerfoss]

Ah gotcha. What grain projectile is that?

88

 

[lycokayaker]

my proof has seen a diet of 55fmj for break in and then a light load of 62 bthp's for 100 yard barricade practice and 75 ELD's loaded to jump .035" for long range practice. zero issues feeding... that said I have had issues with snap caps feeding with polymer mdt's, the live rounds have been fine though.

Hey so what mags are you running with the 75 ELD's. Did you have a problem with MAX COAL. What did you net out of COAL

 

[Niles Coyote]

Hey so what mags are you running with the 75 ELD's. Did you have a problem with MAX COAL. What did you net out of COAL

Both MDT polymer and the metal mag with the insert from them, I'm not st home to measure but iirc it was a little under 2.490

 

[NJRaised]

I have a 24” ss proof 1:7. It absolutely hammers with 75s.

 

[lycokayaker]

I have a 24” ss proof 1:7. It absolutely hammers with 75s.

Any pics of your groups? What action?

 

[NJRaised]

Any pics of your groups? What action?

5 rounds at 100yds. Bighorn Origin SA.

 

[DDGKunia]

Mine likes 77gn. I'm away from home so shooting box stuff, but best I've found is federal match. 26" Zeus QC. Damn barrel weighs 7 pounds

 

[lycokayaker]

Mine likes 77gn. I'm away from home so shooting box stuff, but best I've found is federal match. 26" Zeus QC. Damn barrel weighs 7 pounds

Good to hear. It was considering one for my Zeus to save money than have a smith make me one