6mm,6.5 or 6? 6.8? What are they?

JoshcBoucher

Sergeant
Full Member
Minuteman
Nov 22, 2011
897
42
Northern Delaware.
Before I spend an hour on the "search thing' I thought i'd ask it here. I can't find much, in my "book" on 6mm, except some wildcats. What,s a creedmoor. I see a lot of guy's lauding them. And while we're at it, what's a Wylde chamber, for 223?
 
a wylde chamber for 223 rifle is basically cut to specs so you can shoot 223/556 without chamber pressure issues. they arent the same round. But many people treat them as such. on creedmoor, im not sure if its a spec or just the word of the day lol. im sure someone else will jump in.

6mm I'm sure have heard of all day. 243... After that its all just difference in brass shapes to fit your desires.
 
The 6 creedmoor is a popular case for prs style matches and just sub 1000yd fun shooting. 6.5 creedmoor case necked down, though there is actual 6 creed brass, gap sells it. You can shoot a 105 berger hybrid at 3150fps (that's generally they speed limits of prs matches) and it gives a pretty dominant caliber for a flat shooting wind fighting caliber with little recoil. Throw that bullet and speed into a ballistic calculator and youll see its advantages. Down side is barrel life but compared to other 6mm's they aren't too bad. If you do a build on one make sure you buy a 6mm barrel blank with a .237 diameter bore not a .236 or you will have primer pocket issues.

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