Good morning all, I bought a stainless MKII in 223Rem.with a 12 inch twist and was wondering how heavy a bullet it would stabilize.I would think if a 14 inch twist 22-250 will stabilize 55 grains, the 12 would do 60's. Sorry if this has been gone over before, but the info I've read varies a bit. Thanks.

I have a Remington 700 chambered in .223 Remington. I has a 1 in 12 twist. I usually shoot 50 grain bullets in it, but I have fooled around with heavy bullets just for fun.

It shoots 60 grain Hornady HP bullets quite well. It shoots Speer 70 grain semi pointed bullets well, also. However, for whatever reason, it scatters 60 Nosler Partitions all over the paper.

I'm not sure how well 60 grain bullets will work in a 223 with a 1-12 twist. But, it's worth a try.
I try to go with a bullet weight the rifle likes. For my 223, I have a good 45 grain bullet load that shoots 3 shots into a 3/8" group at 100, so that is what I'll be using in that rifle, for Coyotes. Mine is a 1-12 twist also.
My 22-250 doesn't shoot 60 grain bullets well with a 1-14 twist, but eats up 55 grain loads.
I am in the camp of fast twists for heavier bullets in 22 caliber.

Don

My 1 in 12 starts to loose accuracy with Hornady 60gr Soft spire points, but still gives hunting accuracy at 100 yds for Pig size game.

the 1-12 should handle 60 grain bullets fine......but I never shoot more than 50 grains in mine.....why?....I like the velocity and range I get!

It will shoot ANY bullet under 60 grains except the 60 grain V Max...

It will also shoot the 63 grain Sierra and the 70 grain Speer SMP just fine.. their shapes make them great for a 1 in 12 twist...Both are excellent performing deer bullets in the 223 if you use it for deer hunting also...

Seafire ; On Deer ?. Oregon allows that caliber ?. 63 grain seems a little light to me personally but if it ain't broke don't fix it !.

The smallest caliber I ever used on deer was a .243 or 6mm . Now I just use my 7MM rem mag 120 -160 grain on Mules depending on size of said beast !.

Oh by the way Canada has the BBBruce problem . We should write to them and thank them for keeping the horses ass !. ...

Dr K..

Oregon allows 22 caliber centerfire on deer... technically a 22 Hornet would be legal here...

But at least in western Oregon, the size of most of the blacktails... a 223 is more than adequate for most of the deer here...

I have taken several with the 70 grain Speer...in a 223, and a couple in a 22.250...

at 200 yds or less the 22.250 really hammers them with that bullet...both of mine have been instant kills...

the 223 kills they stumbled a few feet than dropped over dead...

I spend time playing with such things, as an interest in teaching young kids to shoot and hunt...and recoil sensitivity is an issue...

As for myself, I hunt a lot with the 260 Rem and 100 grain bullets... or the 7 x 57 Mauser a lot in a Win Featherweight the last couple of seasons.. More based on the comfort of the rifle vs the caliber...

That 70 grain Speer in a 22 caliber is more than enough for deer in most of the country in my opinion.. not maybe for the big midwest northern whitetails..but it will drop any deer found in most of the south, or the Blacktails here on the west coast...

The 60 gr TAP stabilizes fine in 223 1 in 12".
The 55 gr Vmax will not stabilize in 223 1 in 16".

My Rem. with 1-12 shoots most 50 gr. bullets very well and 52 gr.s almost as well. It shoots either much more accurately the 60 gr. bullets or anything heavier. Since I'm mostly making holes in paper, groundhogs or very rarely coyotes with the gun, I go for the accuracy of the lighter bullets. If I were culling small whitetail with the rifle I'd probably use 60 or 62 gr. bullets and limit my max range to the @200 yrds, the range at which I could be certain to shoot a 4" group with the heavier bullets.

If you want to use heavier bullets in your 223, you will get much better results from 1-9 twist barrel. If you shoot lighter bullets in this faster twist rate, check the bullet specification first, as some of them do not hold together if driven at higher velocities.

My CZ likes 50 grain bullets.

MY 1:12 Remington shoots most commercial bullets
up to 55 very well.

I haven't tried any of the 60-62's

I have run a box of SS109 through it.

If you stood very still at 100yards you could hear them go by but I couldn't hit you at 100yds if I tried with SS109's in that rifle...

I managed to miss a 55gallon drum at 100 yards with ten shots.

The 11th shot finally hit the barrel and made a perfect "keyhole".

OTOH with cheap USA brand ball ammo the same rifle can make smiley faces out of 1" "target dots" and take out 10-for-10 if I'm shooting at 12ga hulls stood up.

granted the SS109's are more difficult to stabilize than say... a 62gr sierra, but....

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