Hello everyone. Happy new year!

I own a CZ 527 223 with a 1/12 barrel. Will this barrel stabilise the sierra 63 grain SMP varmint bullets?

Thanks

It very well could. An old 22-250 with a 1 in 14 did. roger

It should, but you won't know till you try. I've used the 63 grain Sierra in a 1:12 .223, and it did OK. The accuracy wasn't great but was more than acceptable.

it and the 70 grain Speer are designed with that SMP profile... makes the bullet shorter and allows them to stabilize at 223 velocities with a one in 12 twist...

I've always experience exceptional accuracy out of bolt actions with them...

it is one of my more favorite 223 bullets, as is the 70 grain Speer...

seafire2 wrote:

quote:

I've always experience exceptional accuracy out of bolt actions with them...

Your post reminded me of something:

Back in the 80s, I had a Rem 788 in 22-250 that absolutely loved the 63 grain Sierra. It didn't seem to matter what powder I put under it, either; it always shot exceptionally well. I took a number of coyotes with that bullet in that rifle, and while it always exited, the exits were always small and didn't ruin the pelt.

That's one of the rifles I could still kick myself for trading away...

hi not to sure about 63 grains in 1-12 twist i think there for lighter bullets i have a steyr tac elite with 1-9 twist and it will shoot one hole groups at 150 and a little over a inch at 250 all day long great round i do use the 63 grainers all the time good round on fox and grey crows hope this helps one of my buddys had a tikka t3 with 1-12 it did not group as well with them but 55 vmax were great all day long

That bullet is also a tack driver in my 225Win, which I believe has a 14" twist. My experience with it on coyotes is the same as Bobby's. I know some guys who use that bullet on deer, and are verty happy with the results.

It doesn't have a plastic tip, so it's not pretty or sexy, but it sure gets the job done!

I've used both that bullet and the Sierra 65gr BTSP in my CZ M527 Carbine with great results accuracy-wise. I haven't shot any game with them, yet.

Good Luck!

OK guys. Thanks for the advice. I'll buy a box and give them a go. I'll let you know how they shoot.

Tom

I think my CZ shot them at about an inch. Do yourself a favor and try some Hornady 50 grain SXSP bullets and some Benchmark powder. Will actually outshoot the Winchester white-box 45 grainers!

I'll be pretty darn amazed if they don't shoot for you. The 63 has consistenly been on of the most accurate 22 cal slugs I've ever tried in quick and slow twists.

Plus it works very well on big game as well as yotes and such.

Mark D

I have a Sako 75 in 222 Rem with a 1-14"twist and that manages to stabilise the above bullet fine.If I do my bit sub inch 3 shot groups no problem.-Toby

Back in the 60s when I was a young sweet thing I had occasion to use the 63gr semi point Sierra on deer. This happened because I ran out of Barnes' 70 grainers.

In one day there were two mishaps. The first adult mule deer doe was coming straight at me down a bald hill. At perhaps 50 yds. I put a 63 grainer right in the middle of her chest with the 22 Varminter. Did it again perhaps at 20 yds.The deer kept coming and droped in into a brushy draw on a dead run below where we were standing. We walked the edge of that gulley for a pretty good distance until we came across a hunter below in the brush.When quiried he responded that he hadn't seen the doe. There was not another shot fired that morning and a couple hours later we found the deer hanging in the hunters camp. There were 4 of them and 2 of us and a lot more deer in the area.

Later that day I was laying beside a down tree on a slope overlooking a fair sized mountain meadow with a jeep road down it's center. Another full grown mature doe came bouncing down the road parallel to me at about 50 yds. away. She took three well placed shots (63 grainers)and never slowed down. My buddy found her a couple hours latter in the cedars and brush 400 to 500 yds from where she was shot. There was no exit wounds and little or no blood trail. It was pure luck that my buddy found her.

Think and say what you will but as for me I'm convinced that Many other cartridges would have produced Bang Flops with the first shot. The 22 calibers are on the fringe of capability when it comes to mule deer size animals. roger

Ok well now that we know how you feel about the 63 as a deer bullet...

The fella asked how it would shoot in his 223, any comments on that?

quote:

Originally posted by Mark Dobrenski:
Ok well now that we know how you feel about the 63 as a deer bullet...

The fella asked how it would shoot in his 223, any comments on that?

I did earlier roger