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300 Yards
BIG AL
Member Posts: 194 ✭✭✭
Using a 1&8 twist 20 inch stainless barrel,77 Gr. match king bullet
how far do I have to push the bullet out of the brass to be accurate.
This is using a custom built AR 15.
how far do I have to push the bullet out of the brass to be accurate.
This is using a custom built AR 15.
Comments
YOU ARE OUT OF LINE, SIR. You asked for and received a reasonable answer to your question. ONLY experimentation with seating depth can determine what will work with your gun. I might add to the answer you received that seating a bullet out too far will cause magazine feeding issues and possibly pressure spikes.
Unless you single shot it [}:)]
Since none of us knows the exact length of YOUR chamber and barrel throat, no one will have the correct answer. Oh BTW, I'm fairly sure you push the bullet INTO the brass rather than other way around.
So, we are left hanging until Al come back.[?]
As an aside, you may well have mistaken my "signature" line as a part of my answer, but it may ALSO be applicable
Many of the forum members put their favorite quotes or "signatures" on their responses.
It takes a bit to figure it out and I'm sure no one was trying to belittle you.
Hang in there.
Using 77 gr.SMK
22gr. of H322
Single round mag.
Chamber oal is 2in..250.cheyenne9
BTW, H322 seems a touch fast for that bullet weight... I think H335 might perform a little better.
Pay attention to your reloading dies. If they have an expander ball, get some that don't.
In "Big Al's" defense, I assume he read WantedMan's second line and didn't realize that was a "signature quote" on all his responses. If that was the case, you should edit your post BigAl, if not, be a little nicer on future posts.
This is at least the 3rd time a newbie/poster has mistaken his sig line as a insult. Maybe the problem lies with the sig line and not the
person reading it.[;)]
BIG AL This is how I figure out my cartridge OAL. I use a Stoney Point tool. It uses a modified case that I place in the chamber. Once chambered I push the planned bullet slowly forward until the bullet touches the lands. I lock the rod and then pull everything out of the chamber. I use the micrometer to measure the OAL. I subtract .010 inch and use that number as my max cartridge OAL with the bullet I selected. If you change bullets you will have to repeat the process. Now start to play with powder types and bullet seating depths. Usually .010 to .030 off the lands works the best.
I use the same set-up and process to determine the best COAL and CBTO.
- http://www.bergerbullets.com/effects-of-cartridge-over-all-length-coal-and-cartridge-base-to-ogive-cbto-part-1/
- http://www.bergerbullets.com/effects-of-cartridge-over-all-length-coal-and-cartridge-base-to-ogive-cbto-part-2/
FYSA, Stoney Point is now the Hornady lock and load products >>> http://www.hornady.com/store/LNL-Gauges-Formerly-Stoney-Point
You'll have to experiment with seating depth (pushing the bullet out from the brass, as you call it) to find where your barrel likes it.
IMHO: You will have to push the bullet out of the brass 300 yards to check the accuracy!!!!!!!!!
quote:Originally posted by geeguy
In "Big Al's" defense, I assume he read WantedMan's second line and didn't realize that was a "signature quote" on all his responses. If that was the case, you should edit your post BigAl, if not, be a little nicer on future posts.
This is at least the 3rd time a newbie/poster has mistaken his sig line as a insult. Maybe the problem lies with the sig line and not the
person reading it.[;)]
I had a long, facetious reply to your comment prepared Babun, but thought better of it...guess I'm not much of a keyboard commando. In my 15 yrs (+/-) on these forums my signature line has been mistaken as part of a comment exactly TWICE, by MY count.....Shy of an admin removing it, the sig line ain't goin' nowhere, so I guess you'd best get used to it if you haven't by now; I find that those words apply to any number of situations on a given day
Load it as long as will fit the magazine and give it a try.
I would not pick H322 for such a heavy bullet, but if that is all you can get in The Panic, SHOOT THE GUN.
Loading to the jam point does eliminate ogive error, but it is above the skills of the average handloader.
Old Salt is certainly correct. BUT, Sierra MK's out of the box will shoot sub 1/4MOA, even with ogive discrepancy ignored. It just won't matter in your AR.
MG1890 said it all. After setting up your OAL with a stoney point or similar tool, the rest of this interesting discussion is just that, interesting but not really worth the time and energy spent pursuing them.