Search found 321 matches

by excess650
Tue Oct 13, 2020 3:20 pm
Forum: Casting
Topic: HELP! AR Leading issues
Replies: 7
Views: 253

Re: HELP! AR Leading issues

Your alloy might be OK. Are you quenching AFTER applying the Hitek? I run that bullet with conventional lube over H110 for 1920fps avg across the chrono with no barrel leading, but those bullets are quenched and sized, not subjected to another heat cycle that might anneal them. I'm shooting another ...
by excess650
Mon Oct 12, 2020 2:03 pm
Forum: Casting
Topic: 300 blkout supersonic cast?
Replies: 2
Views: 544

Re: 300 blkout supersonic cast?

Lee C312-155-2R is .955" w.GC 160gr
Lee CTL312-160-2R is .975" w/gc 170gr

if you're looking for a lighter bullet:
https://noebulletmolds.com/site/shop/30 ... -cavity-gc

139gr w/GC, powder coat, size .309-.310" and run full throttle
by excess650
Mon Oct 12, 2020 1:57 pm
Forum: Casting
Topic: Powder coat vs lube
Replies: 8
Views: 2084

Re: Powder coat vs lube

I tried PC for the first time with HF white. I was coating 230 grain Lee. Not a heavy coating but when loading bullets the die shaved a lot of lead down the side of the case. Never had that problem with 45 10 10 Alox. Your thoughts? Apparently you have not expanded the case mouth enough to prevent ...
by excess650
Fri Jun 05, 2020 5:10 pm
Forum: AR15s
Topic: Well crap....
Replies: 18
Views: 1215

Re: Well crap....

If you're going to switch from jacketed to cast, be sure to get the copper out of the bore. Your leaded gas rings are the result of gas cutting the bases of your bullets as they pass over the gas port. The base of the bullet is the steering end, so when it exits the muzzle, high pressure flows throu...
by excess650
Fri Jun 05, 2020 12:55 pm
Forum: AR15s
Topic: Well crap....
Replies: 18
Views: 1215

Re: Well crap....

Let's put it this way. Has anyone successfully used cast bullets in the 125 gr to 150 gr range in an AR with a 1/8" twist. If so how. Cast bullet RPM is limited to around 140,000 rpm. Above that you start to have problems. With a 1/8" twist that would limit you to a velocity of around 1550 fps. At ...
by excess650
Tue Jun 02, 2020 9:15 am
Forum: AR15s
Topic: Well crap....
Replies: 18
Views: 1215

Re: Well crap....

I would suggest trying cast bullets as large in diameter as will chamber. My one and only try with plainbase bullets was with a GC design, powder coated, but no gas check grouped about 2" at 50 yards. The same bullet with GC will print most holes touching, so I use GCs. IMR 4227 is a very flexible p...
by excess650
Tue Jun 02, 2020 9:05 am
Forum: AR15s
Topic: Conversion Question
Replies: 2
Views: 249

Re: Conversion Question

A friend of mine tried with the same parts a couple of years back and it didn't work.
by excess650
Sat May 23, 2020 5:40 am
Forum: Casting
Topic: Loading cast Lee 160 grain
Replies: 16
Views: 985

Re: Loading cast Lee 160 grain

I shoot both the Lee C312-155 and the CTL312-160. My chambers will allow both of these sized .311" and seated to the crimp groove. Powders of choice are IMR 4227 and H110. IMR 4227 is more flexible in that it doesn't have to be run full throttle. Accuracy? Yes, ALWAYS less than 2moa, and usually clo...
by excess650
Thu May 14, 2020 6:24 pm
Forum: Handloading
Topic: The importance of headspace.
Replies: 15
Views: 1103

Re: The importance of headspace.

What caliber is that 44 ? 28-30 ? 25-25 ? Yeah, the big Unertl looks out of place. I HAD an early, square cornered 47 pattern 44 with Pope Barrel, false muzzle, and bullet starter. It was a 38-55 and I was afraid to shoot it, so it went to a collector. Speaking of big rifles and small calibers, I ha...
by excess650
Thu May 14, 2020 5:03 pm
Forum: Handloading
Topic: The importance of headspace.
Replies: 15
Views: 1103

Re: The importance of headspace.

I shot a CPA based BPCR for years. At one time I had 3 CPA actions, with at least 2 barrels each. I never had a scope on any of mine, but the new owner of 2 of those rifles has scopes on them.

Your old 44-1/2 seems to have a short forend. Was the barrel set back?