Striker Calibers

[DaveC]

I reread your post and saw that you wanted to stick with a 223 bolt face. With that said the 300 Blackout would make a good choice, easy to load, lots of bullet choices and easy to find brass.

[marshall623]

This striker as a .243 was a shooter but more recoil than I like. Switched it to a .221fb and it works just right for target and varmint.

Need a caliber for deer without changing the bolt head. Is there much difference in a 8 twist .223, a 6 x 45, or one of the TCU calibers? Have plenty of .223 brass that can be resized. The .221fb is legal here for deer and does just fine with 55gr but is a little light. Need to shoot 100-200yrds and would be good to have 75+gr loads.

Another option for the 223 bolt face is a 7 X 47 I know some silly wet shooters who shoot them in XP's and they mow BB rams down like a freight train . Formed like a 7 TCU except for using 222 Mag brass for the extra length

[yorketransport]

I've been thinking about trying a 7 TCU on the Striker. I have one in a TC, but you could probably push it a little harder from the bolt action. Plus with some of the new 180gr VLDs you could really get some amazing long range performance.

Andrew

[Appleseed]

There was a member here that shot a 6 X 47 using .204 brass. He and his wife had rifles they competed with. Reported vg performance. I see plenty of .204 brass around. Could be a 7mm easily, haven't found load data.

I'm leaning to the 300blk, brass is readily available from several vendors on the 300blktalk site, a member here has some barrels due in 4-5 weeks, dies are cheap.

[yorketransport]

If you do the 300 BLK, I think you should screw a suppressor on the end of it.:p

Andrew

[Appleseed]

One of the smiths here is class III and manufactures his own brand. He also hunts the farm for free. Shouldn't be hard to get on the list and get the paperwork. He does some black rifles in 300blk.

[JASmith]

A 6x45 would be my first thought since you are limiting yourself to the .373" bolt-face...
If factory ammo is your preferred path, then +1 here.

Check this ammo: http://www.midwayusa.com/product/925535/cor-bon-dpx-hunter-ammunition-6x45mm-80-grain-barnes-tipped-triple-shock-x-bullet-hollow-point-lead-free-box-of-20.

That 80 gr TTSX will still be going well over 2,000 ft/sec at 200 yards just about no matter what legal barrel length you choose.

Zero at 200 and you are good to go, even for the odd 300 yard shot.