joining the 300blk club.

[ancientriflesmith]

My CMMG complete rifle 300 BO is about .3085 the way I measure slug from bore. My best load is Lee 312 155 gr. sized to .310. Amazing from good rifle stand it shoots less than MOA on days my eyes are good. Used all the powders recommended but settled on H110 ?? never quote loads off top of my head. Load everyday I have time and shoot most every day if I can get outside. I am lazy and have not chronographed this load but book says its about 1850. Me thinks.
ancientriflesmith
Jack of all trades, now down to only a few.

[MT Chambers]

Your eyes look kinda spooky in the picture.

[Friar_Tuck]

Love the 300!
This SBR is fun as heck, and surprisingly accurate.

[Captain O]

I guess you really must have the 300 Blackout bug. Strange, I must be immune. (I do, however, have other viruses).

[therealhitman]

Your eyes look kinda spooky in the picture.

It's them crazy eyes what lets im shoot so dadblamed good wit no arms. Good lookin SOB too!

[Wedgie]

Wedgie, how does that short one shoot? Thinking of a pistol build (don't want to pay the tax) but wondering how bad/much recoil, ~170gr low fps super?

It shoots real soft. Runs an adjustable gas block. Recoil is not an issue. My first 300 was a 9" pistol and it is a good shooter as well but it has only run jwords. This SBR has widened feed ramps and was built specifically to run CastBoolits.

Sorry it took so long to reply.

[Moonie]

My newest 300 AAC Blackout 7.5" full bull from MGM with supressor, to go with my 16" upper.

[clearcut]

Me too ordered my 300 today

CC

[xacex]

That bite goes deep. Carefull, next thing you know you have 3-4 blackout rifles, file paperwork for SBRs and silencers, scour the countryside for 1680, and go through over 100 pounds of lead a year feeding the 300BO children.

[aquarist]

My second AR but in 300blk. Also my favorite rifle I have right now.

[Boolit_Head]

That bite goes deep. Carefull, next thing you know you have 3-4 blackout rifles, file paperwork for SBRs and silencers, scour the countryside for 1680, and go through over 100 pounds of lead a year feeding the 300BO children.

You been stalking me trying to get some of my 1680?

[popper]

I don't think they realize how popular the 300BO really is. A guy at the local range said he is bored with his. I asked why, he said it just works too well, nothing to do but but punch tight groups. I suggested he try cast but no go. I'm even finding tossed BO brass!

[aquarist]

I've yet to find toss out blackout brass, but hope to find some soon!! Getting tired of forming my own.

[popper]

I pick up the BO HS (usually H or UMC/Rem) stuff but watch the converted ones. Never know how many reloads they have on them. Also check for brass coated steel cases in 223.

[aquarist]

I pick up the BO HS (usually H or UMC/Rem) stuff but watch the converted ones. Never know how many reloads they have on them. Also check for brass coated steel cases in 223.

Good advice. I'm mostly converting 5.56 brass and am measuring the wall thickness to make sure they are not too thick. So far I've found about a 100 or so that are too thick out of the couple thousand 5.56 I am converting. It's a cool process but time consuming.

[Boolit_Head]

I switched to only using Lake City brass and all of them have been the proper thickness.

[xacex]

You been stalking me trying to get some of my 1680?

Shhh....go to sleep. Leave the case unlocked so the 1680 can breath.