Go Back   Maryland Shooters > The Arsenal > Rifles

Notices


Reply
 
Thread Tools Display Modes
Old August 13th, 2017, 08:09 PM #21
j_h_smith's Avatar
j_h_smith j_h_smith is online now
Huckleberry Dillinger
 
Join Date: Jul 2007
Location: Hazzard County
Posts: 19,129
Images: 2
j_h_smith j_h_smith is online now
Huckleberry Dillinger
j_h_smith's Avatar
 
Join Date: Jul 2007
Location: Hazzard County
Posts: 19,129
Images: 2
Congrats on the reliability and the 20th overall.
__________________
Jim Smith

The years passed, mankind became stupider at a frightening rate. Some had high hopes the genetic engineering would correct this trend in evolution, but sadly the greatest minds and resources where focused on conquering hair loss and prolonging erections.
j_h_smith is online now   Reply With Quote
Old August 13th, 2017, 09:15 PM #22
boss281's Avatar
boss281 boss281 is offline
Member
 
Join Date: Apr 2012
Posts: 585
boss281 boss281 is offline
Member
boss281's Avatar
 
Join Date: Apr 2012
Posts: 585
Quote:
Originally Posted by jimbobborg View Post
I run a 9mm specific buffer. After I greased the bottom of the BCG and used more CLP than usual, the carbine ran fine with the two new magazines. The two old Colt mags still acted wacky, I'm thinking there's a problem with the feed lips on them. Looks like I'm going to have to pick up a few more magazines, I've got too much invested in PCC now to just drop the platform.

On a side note, I got 20th overall, and got 100% on the fifth stage. So weird seeing my name at the top of a list!
It's hard to find the Colt mags at reasonable prices, but no one wants to order Metalforms (which are considerably cheaper but the same manufacturer). I found Colt 32 rounders for $60 each. Sheesh!
__________________
IDPA # A453757
USPSA #A105100
boss281 is offline   Reply With Quote
Old August 13th, 2017, 09:41 PM #23
j_h_smith's Avatar
j_h_smith j_h_smith is online now
Huckleberry Dillinger
 
Join Date: Jul 2007
Location: Hazzard County
Posts: 19,129
Images: 2
j_h_smith j_h_smith is online now
Huckleberry Dillinger
j_h_smith's Avatar
 
Join Date: Jul 2007
Location: Hazzard County
Posts: 19,129
Images: 2
Quote:
Originally Posted by boss281 View Post
It's hard to find the Colt mags at reasonable prices, but no one wants to order Metalforms (which are considerably cheaper but the same manufacturer). I found Colt 32 rounders for $60 each. Sheesh!
Last I bought was a few years ago and I was happy to find them $45 each.
__________________
Jim Smith

The years passed, mankind became stupider at a frightening rate. Some had high hopes the genetic engineering would correct this trend in evolution, but sadly the greatest minds and resources where focused on conquering hair loss and prolonging erections.
j_h_smith is online now   Reply With Quote
Old August 14th, 2017, 04:59 AM #24
jimbobborg's Avatar
jimbobborg jimbobborg is offline
Oddball caliber fan
 
Join Date: Aug 2010
Location: Northern Virginia
Posts: 15,055
jimbobborg jimbobborg is offline
Oddball caliber fan
jimbobborg's Avatar
 
Join Date: Aug 2010
Location: Northern Virginia
Posts: 15,055
Metalforms are $39.99 at Midway. But the Colts are the ones I am having real problems with. So, it's looking like Colt style 9mm ARs are as fussy about magazines as some 1911s. Find what works for you and use those.
__________________
When you can't list all of your guns in your signature because you ran out of characters, you might be a redneck.

Jim
jimbobborg is offline   Reply With Quote
Old August 14th, 2017, 02:37 PM #25
boss281's Avatar
boss281 boss281 is offline
Member
 
Join Date: Apr 2012
Posts: 585
boss281 boss281 is offline
Member
boss281's Avatar
 
Join Date: Apr 2012
Posts: 585
Ok, I went to AGC with the Colt 6450 this morning, shot 120 rounds of Lawman 124g TMJ, and 30 rounds of cheap American Eagle 115g FMJ, at 25 and 50 yards. Shots were grouped with each, but placed differently. Groups jumped from 1-2" at 25 to about 5" with an occasional stray at 50. Note I cleaned the rifle last week with LIGHT oiling after, and shot 100 rounds. All magazines were 20 year old Colt originals, 32 rounds, no feed problems. Magazines have never been opened up for maintenance, and my brother claims he had 3 of the 32 round magazines loaded for 10 years before he sold it to me and I shot whatever he had in there.

Before casing up the rifle, I popped it open and the upper and lower were absolutely a mess, with brass particles everywhere, even down the bore (well, something was down there). Took it home, disassembled and cleaned it, and locked the upper on the bench while I marked off 25 yards, stuck up a target, and looked down the bore to rough sight it in, followed by the irons, and then a new red dot for the carry handle. Taking it back tomorrow and will run 200 rounds through it again.

Thinking this through, it was just as dirty after two sessions as it is after 1-2 months of shooting without much more than a quick spray of clp on a bore snake and running it through once or twice weekly. It's a durable rifle and holds up well. My brother, a retired LEO, bought it in 1995 and said he cleaned it once in 10 years, and unsure of the number of rounds that went through it. He said it has been dropped once, and I'm still thinking the rear sight on the fixed carry handle is skewed, but I'll work that problem another day. It seems to shoot more or less true at the distances it was designed for, and I've got used to more frequent cleaning compared to my 5.56 pattern rifles.

I'm glad I got this rifle, and have ordered the new modern version, the Colt 6951, from HogSniper at High Rock Outfitters, for IDPA and USPSA competitions...
__________________
IDPA # A453757
USPSA #A105100
boss281 is offline   Reply With Quote
Old August 14th, 2017, 04:04 PM #26
outrider58's Avatar
outrider58 outrider58 is offline
Closet Denizen
 
Join Date: Jul 2014
Location: Anywhere Merryland
Posts: 18,602
outrider58 outrider58 is offline
Closet Denizen
outrider58's Avatar
 
Join Date: Jul 2014
Location: Anywhere Merryland
Posts: 18,602
Could the "brass" particles be from plated bullets?

It is important to, if you are finding an inordinate amount of brass shavings inside your gun, grab a few pieces of fired brass from that session. That brass will go a long way in diagnosing and or preventing a future problem.
__________________
"
...I didn't shoot him that hard." Dirty Harry

"We keep you alive to serve this ship...row well and live" Quintus Arius
outrider58 is offline   Reply With Quote
Old August 14th, 2017, 04:50 PM #27
boss281's Avatar
boss281 boss281 is offline
Member
 
Join Date: Apr 2012
Posts: 585
boss281 boss281 is offline
Member
boss281's Avatar
 
Join Date: Apr 2012
Posts: 585
I did, almost all of them. Nothing to mention other than being really fouled except for ONE round which was a bit crimped. A nice guy named "Matt" was shooting two 9mms (a "Kriss" and Beretta) a few benches down, and let me look at his brass. Pretty fouled up, perhaps not as much of mine.

If the rain holds off I'll head to the range again and take photos tomorrow...
__________________
IDPA # A453757
USPSA #A105100
boss281 is offline   Reply With Quote
Old August 14th, 2017, 05:51 PM #28
rayrevolver's Avatar
rayrevolver rayrevolver is offline
Member
 
Join Date: Jul 2012
Posts: 336
rayrevolver rayrevolver is offline
Member
rayrevolver's Avatar
 
Join Date: Jul 2012
Posts: 336
Could the fouling and particles be from the case being ripped out prematurely?

http://www.orions-hammer.com/blowback/

For what its worth, I was directed this this link where the guy talks about generalized weights for bolts using blowback systems. For 9mm, the weight is 1.7 lbs or 27 oz (this would be the bolt + buffer on a 9mm AR). He states the spring force has no real affect on holding the bolt closed during intial ignition.

I know my 9mm Spinta bolt carrier is about 15.5oz, so I was trying get close to a 12oz buffer without spending an arm and a leg. So far, my combined weight is 25.5oz or 1.59 lbs.

The Colt 9mm buffer is 5.5 oz, so I imagine it is lightly buffered. I wonder what would happen if you ran a 10oz or more buffer and if it would help your problems?
rayrevolver is offline   Reply With Quote
Old August 14th, 2017, 06:11 PM #29
boss281's Avatar
boss281 boss281 is offline
Member
 
Join Date: Apr 2012
Posts: 585
boss281 boss281 is offline
Member
boss281's Avatar
 
Join Date: Apr 2012
Posts: 585
Interesting note in that link, but before I do anything I'm going to get on the phone with Colt. I especially like the last line " Like I do, you should STRAP ANY NEW GUN TO A TREE and fire off dozens of rounds remotely from a safe location...". Now how the heck do you fire a gun "remotely from a safe distance"???

__________________
IDPA # A453757
USPSA #A105100
boss281 is offline   Reply With Quote
Reply

  Home Page > Forum List > The Arsenal > Rifles


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 08:53 PM.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
2017, Congregate Media, LP Privacy Policy Terms of Service