|
Post by Richard on Nov 5, 2016 7:29:45 GMT -5
Two weeks ago when I bulged my barrel I never examined the bushing. My HIS plug consisted of one of Hanks 1/4" long bushing plus a .030" x 3/8" long Fishawk bushing. I had visually looked at the plug and could see, what appeared to be, a normal hole so never investigated further. This past week after shortening the barrel I shot it very successfully with great groups. Yesterday when I did my cleaning procedure, I took out the plug and removed the set screw as I generally re-anti seize it. Uppon looking at it I noticed what appeared to be a large crack (the set screw had been hiding it). So, I pressed the (2) bushings out and the picture shows how it looked. Pretty destroyed yet, it was being held together inside the plug plus with the Hank's plug behind it, excellent results were achieved........Go figure? So now, I have that old Hank's plug in plus a .026" solid carbide bushing in front of it. Sorry, I had the wrong photo
|
|
|
Post by doug136 on Nov 5, 2016 8:09:50 GMT -5
Nice shooting Richard ! Did I understand you correctly that take out the set screw that holds your bushing in every time you clean the gun ?
|
|
|
Post by elkman1310 on Nov 5, 2016 8:35:27 GMT -5
Looks like you have a little horizontal and vertical in that group! A new test is in order. Hey good shooting keep up the good work. I am going out today and do a little test because tomorrow I want to shoot the brass bullets at 600 yards.
|
|
|
Post by fishhawk on Nov 5, 2016 8:43:03 GMT -5
I'm sure all that extra pressure is not good for any bushing.
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Nov 5, 2016 9:14:43 GMT -5
You're using two bushings stacked inside your breach plug??
|
|
|
Post by Kyle on Nov 5, 2016 9:55:27 GMT -5
.792" 3 shot group at 300 yards?? You're slipping Richard. 😜 Great Shooting!!! PM sent.
|
|
|
Post by nyhunter on Nov 5, 2016 11:49:34 GMT -5
I think I may crack my bushing with a hammer if I can get my gun to shoot that well !!!
Just kidding Richard, great shooting.
|
|
|
Post by mike on Nov 5, 2016 13:11:09 GMT -5
Hi Richard, I'm curious to learn why you are stacking two different bushings in the breach-plug? How does the plug have the bushing pocket depth to do so? Is your breach-plug a special design? Isn't it a disadvantage to create such a long ignition orifice? Of course, your shooting is exceptional with this set-up, so quite obviously it is working for your gun and load.
|
|
|
Post by Richard on Nov 5, 2016 19:21:48 GMT -5
Hey guys............I did not look after posting the picture. It was not supposed to be the three shot group..........that was previously posted. It is the picture of the destroyed bushing! I am messing with a new image posting site as the previous one "went out of business?" This is one of Hank's HIS plugs. Yes, there is enough depth inside the plug for Hank's bushing (1/4" long) plus a 3/8" long standard bushing. While Hank's bushing had gone from .035" to .040" (I don't believe it is solid carbide and maybe the duplex loads were causing wear) I decided to add a solid bushing in front of it. The reason? Upon talking with Hank he indicated that one end of his bushing has a larger hole than .035---------------He told me initially to have the big hole facing the primer so as to gather the flame and channel it into the smaller end..........Although he admits some others are just using the regular bushing with the same size hole at both ends? I figured........what the heck, what an extra 1/4"........we basically have zero flame channel in the plug to start with and we get a super hot flame from the LRMPers. I also have no problem igniting my duplex in the 209 gun and it has a long PFC and as can be seen, ignition with my set up is no problem. Doug...........yes I do? In the event (such as this) I want to remove or replace a bushing, the set screw is not "welded" in place. Only takes a second when I have the plug out so why not? I had to remove a bushing from one of Herman's plugs that he NEVER takes the screw out and it had to be drilled. If you ever want to get a bushing out...............just take a short 10/32 screw and put it in thru the primer end...........place the plug in your vise and tighten. The screw will push the bushing out. If it is super tight?.........just a little heat while under pressure and it will break loose. I use just a short screw that barely sticks out the primer pocket. Too long and you could bend it. Once it starts moving then you could use a longer screw or a punch.
|
|
|
Post by doug136 on Nov 7, 2016 17:11:30 GMT -5
Richard I'm just curious and not at all trying to start a debate . Why are you duplexing with Hankins ignition ? I completely understand why you do it with a 209 system . But don't understand it with the short flame channel and the hot flame . Is it a accuracy thing or do you just like duplexing ? Like I said I'm not trying to start anything just curious
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Nov 7, 2016 18:31:22 GMT -5
The really hard bushings will break when the set screw is tightened. That could have happened to the shattered bushing. That is why I use loctite bearing retaining compound and only snug the set screw. To remove it, I use a little heat to soften the loctite.
|
|
|
Post by Richard on Nov 7, 2016 20:03:50 GMT -5
Doug...........I have had some poor results with the HIS and some of the cheaper hard/thick jacked bullets. Kyle's work fine for me but I guess I just have an affinity for duplexing. Lots of good results so why switch?
|
|
|
Post by doug136 on Nov 7, 2016 20:12:44 GMT -5
Yep understand ! You definitley know what works for you . Thanks !
|
|
|
Post by Richard on Nov 7, 2016 20:30:29 GMT -5
Let me repharse that..........single powder loads with the cheap bullets.................!
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Nov 7, 2016 21:15:02 GMT -5
Richard, I agree with thicker jacket bullets and single powders.
I was having issues with a savage plug that I enlarged the flame channel and had a .o4o bushing in, giving me terrible sticky primers, had to beat primers off with a hammer 50/50 of the time. I kept messing around with shims, different primers, and had a new bushing installed by Linebauh who also tweaked the primer pocket. Before Linebauh had messed with my plug I had already ordered a new savage plug from Jeff for my gun and had a .o3o bushing installed. I received my plug back from Linebauh first and ran a few rounds down range with no sticky primers but I was using duplex loads. Then I received my new plug from Jeff and realised that I needed to enlarge the primer pocket so a Win209 primer could even go into the plug. After getting it to fit super tight, I felt like I had a great sealing system so I'd try single powders. It goes bang every time now but my group isn't as good as the duplex loads. I had 3 300 BE's left and tried those with single loads, and ended up with one whole group. This tells me the 300 SST just didn't obturate into rifling as well as the BE's and single powders for the SST won't work for accuracy. I think if I upped the charge I'd get better groups but I don't want to shoot that fast and kill my shoulder (need a break).
I don't think it's Jeff's system causing issues with accuracy and single charges it's just the jacket thickness and bullets not obturating into rifling.
I'm very happy with Jeff's savage replacement plug he sent me, I believe it's sealing better than it has since I've had my rifle. Yet i still think duplex is the way to go for thicker jacket bullets.
|
|
|
Post by Richard on Nov 8, 2016 10:01:43 GMT -5
There is a lot to be said for that FAST build up of pressure to get the bullet fattened up and grabbing the rifling? Everyone has to do what works best for them.
|
|
|
Post by GMB54-120 on Nov 8, 2016 10:09:01 GMT -5
I cant get a SST/FTX to shoot anywhere near as well as a BE. Cheap Nosler 250gr and Sierra 458 300gr (sized way down) both shoot fine though. Both have thin jackets and soft lead cores.
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Nov 8, 2016 12:36:17 GMT -5
I cant get a SST/FTX to shoot anywhere near as well as a BE. Cheap Nosler 250gr and Sierra 458 300gr (sized way down) both shoot fine though. Both have thin jackets and soft lead cores. For me, I've found sizing them loose then knurling back up with a duplex load works best, but I think your right the BE's just plan shoot!! I have some 302 Bomb that I need to start shooting but I've been trying to get things dialed in with SST first I only have 65 or so Bomb bullets and want to make sure i have things very close before I start running them. Next year I'm going to set everything up more for hunting and forget about all this hot rod stuff. Too much money and not enough time. I am more of a hunter than a competition shooter, wish I was a competitive shooter but just don't have time. Next year I have to make a new sml and right now looking like I'll have the CVA Scout V2 with break done and set up for 250 SST maybe the 302 Bomb but right now I'm not sure just know I'll have the Scout converted. Good luck everyone season is in full swing.
|
|
|
Post by doug136 on Nov 9, 2016 8:10:31 GMT -5
If you want a preformance bullet that shoots like a BE try Kyle's accumax . I have them shooting every bit as good as any BE with a much better BC . I'm doing it with Blackhorn which only has a max pressure around 25000 . I have no problems what so ever keeping my groups .5 or less . Just a thought
|
|
|
Post by nyhunter on Nov 9, 2016 8:21:58 GMT -5
I cant get a SST/FTX to shoot anywhere near as well as a BE. Cheap Nosler 250gr and Sierra 458 300gr (sized way down) both shoot fine though. Both have thin jackets and soft lead cores. For me, I've found sizing them loose then knurling back up with a duplex load works best, but I think your right the BE's just plan shoot!! I have some 302 Bomb that I need to start shooting but I've been trying to get things dialed in with SST first I only have 65 or so Bomb bullets and want to make sure i have things very close before I start running them. Next year I'm going to set everything up more for hunting and forget about all this hot rod stuff. Too much money and not enough time. I am more of a hunter than a competition shooter, wish I was a competitive shooter but just don't have time. Next year I have to make a new sml and right now looking like I'll have the CVA Scout V2 with break done and set up for 250 SST maybe the 302 Bomb but right now I'm not sure just know I'll have the Scout converted. Good luck everyone season is in full swing. There was a pretty good write-up on the other board of a CVA Scout V2 that was converted and tested. Good luck
|
|