Bigbull Posted March 14, 2019 Report Posted March 14, 2019 Anyone ever play around with larger than .936 gas blocks ? I have for a while ! Making some adjustable gas ones in 1.125 and 1.1875. Made a couple of custom creedmoor barrels to play with.
Bigbull Posted March 14, 2019 Author Report Posted March 14, 2019 (edited) Thanks! I’m waiting on my blanks to show up but I am going to be doing a couple of 6.5 PRC dpms setups , they are x caliber blanks and will be 1x6 twist. Going for a 28 inch tube that’s 1.25 be hind the gas block , 1.1875 gas block and 1.125 to the muzzle , plus 3 extended gas tube and I will make the muzzle brake. All of it stainless! I think that’s gonna be a fun project ! The barrel in the pic up above is a 19 inch blank that I started with but in 6.5 creedmoor. It weighed 7 lbs before I fluted it and it weighs 4.5 lbs now! Edited March 14, 2019 by Bigbull
Bigbull Posted March 14, 2019 Author Report Posted March 14, 2019 Working on the set screw side. What do you folks think?
Rsquared Posted March 16, 2019 Report Posted March 16, 2019 On 3/14/2019 at 9:45 PM, 98Z5V said: The machine work is dead-sexy. Definitely.
unforgiven Posted March 16, 2019 Report Posted March 16, 2019 That is bueatiful work , you had me at shiney....
Bigbull Posted March 16, 2019 Author Report Posted March 16, 2019 Yeah milling stainless always comes out nice and pretty ! I’m also doing a custom 45 raptor barrel , it’s OAL is 27 inches (it’s a stand gun) I did a rifle length system , 1.250 behind the gas block ,1.125 gas block and then 1 inch to the muzzle , and then the muzzle brake , I did a 1x16 twist barrel. I’m also gonna make my own solids for it which I’m looking in the 225-250 grain area , I’m still working out the design on it but here is some pics of the barrel.
unforgiven Posted March 17, 2019 Report Posted March 17, 2019 Wow is this what you do for work brother?
Bigbull Posted March 17, 2019 Author Report Posted March 17, 2019 No I’m a machinist for a living this is just for fun. A couple of close friends take advantage of me ?
Bigbull Posted March 17, 2019 Author Report Posted March 17, 2019 I may dump the creedmoor barrel ? I have a 260 rem and I’m not sure I wanna deal with buying more brass etc. Plus I’m sure once I my 6.5 PRC going I won’t mess with 260 rem anymore either lol!
willbird Posted May 8, 2019 Report Posted May 8, 2019 On 3/17/2019 at 2:13 PM, Bigbull said: No I’m a machinist for a living this is just for fun. A couple of close friends take advantage of me ? I ran 3 and 4 axis Fadal cnc mills for about 5 years. I miss having the machine and all the tooling, and BobCad all there for making anything my mind could dream up. Bill
Bigbull Posted May 8, 2019 Author Report Posted May 8, 2019 Dang Fadal huh they haven’t been around in a while ! And good luck getting parts for them ! But yes it’s nice have a very large shop to play in!
willbird Posted May 9, 2019 Report Posted May 9, 2019 10 hours ago, Bigbull said: Dang Fadal huh they haven’t been around in a while ! And good luck getting parts for them ! But yes it’s nice have a very large shop to play in! I was out of that shop in 2002 (wow it has been that long) but that was all they had really, 3, 4, and 5 axis, Probably a dozen or more. they had a couple Mazak Integrex....big ones, and one Mazak mill they used strictly for EDM graphite. Bill
Bigbull Posted May 10, 2019 Author Report Posted May 10, 2019 Got about 10 of the 1.187 ID adjustable gas blocks done! Almost done with the 1.125 ID ones also.
Bigbull Posted May 19, 2019 Author Report Posted May 19, 2019 Here is a custom gas tube I bent up and made from a 21 inch blank. And then the final build of the 6.5 creedmoor , now to go shoot it and see what it does 😁
98Z5V Posted May 19, 2019 Report Posted May 19, 2019 You using 303 stainless or 304 stainless on your gas tubes? Very interested in the shooting results, man.
98Z5V Posted May 19, 2019 Report Posted May 19, 2019 (edited) 303 is the mil-spec, because 303 doesn't work harden with heat, ever. That's why it was spec'd for gas tubes in DI ARs. 304 is what alot of guys make headers out of. 304 changes shape once it gets it's initial heat - which is why header-makers can "be off" once in awhile. No worries for them, because the headers will "conform" to where they should have been made in the first place. 303 is hard to get, but it's worth it, in the long run. I've blown out 304-stainless headers a few times, due to heat, right at the collector, both times. It can't handle the concentration of heat, long term. My $0.02. Edited May 19, 2019 by 98Z5V
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