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Post by doug136 on Jun 26, 2016 12:17:36 GMT -5
I have 3 questions , 2 questions I'm pretty sure I already know the answer . The first question ,how do you know when to change a bushing ? My bushing started out at .30 now it's very close to .40 . I'm not loosing accuracy or getting blow by but I have to dry fire the gun 1 out of every 3 shots to get the primer out . This breech plug and bushing has aproximently 150 shots of Blackhorn through it. I'm assuming it's time for a new bushing ? Next question , my retaining screw that holds my bolt in is really getting chewed up . To the point I can't open the action . I can file the screw back to round but it will only last for a few shots then back to opening hard again . Also my action is getting messed up from closing so hard ? Pretty sure I already know the answer but want to make sure before I do something stupid .Third and final question
. How light can I safely set a Savage factory trigger ? And do they make a aftermarket trigger for the Savage ? I have tried to do some research but I think I keep finding the same Timney trigger that's already in the gun . Maybe that trigger is good enough to the point I can set it light ? Thanks guys for any replies
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Post by kbrezlin on Jun 26, 2016 12:44:53 GMT -5
Bushing or vent liner plug? 150 shots doesn't seem like many on a bushing. Have you cleaned the flame channel out? I swapped out my vents at around 0.035.
I put a rifle basix Sav2 trigger in my CF conversion. I really like it and it was fairly simple to adjust. After last season I took it out and reset it for a little more sear engagement. Right at about 2.5 pounds and breaks clean.
when I converted one of mine to a 45 I followed the instructions off smokleesmz website and had no trouble with the bolt closing. There is a link under the savage conversions page. If it's a factory barrel you have the sights not being aligned to contend with.
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Post by hillbill on Jun 26, 2016 13:40:07 GMT -5
sounds like your primer pocket is full of carbon causing pressure on the retention screw? that or your primer to plug pocket fit is overly tight causing the screw problem.
I always changed out my vent liners @ .035-.036, the larger hole allows too much pressure back on the primer sometimes causing them to swell or back the cup out of the body lodging it in the bolt flycut.
one of these or a combination might be the culprit of your issues.
I can answer more questions if you want to send a PM and get my number.
you should be able to take the Timney down safely to 1.5 Lbs or so, just follow their instructions.
sounds like a new retention screw might be in order as well..
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Post by Richard on Jun 26, 2016 14:06:13 GMT -5
Hillbill has it covered Doug!
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Post by doug136 on Jun 26, 2016 14:21:00 GMT -5
It's a Brux barrel , bushing plug , carbon is not the problem . I keep the plug very clean . I have measured bushing several times and had others also measure it . It has opened up to .39 to .40 . I have already ordered another bushing . Im also in the process of getting new screws . The bolt has always closed pretty hard. Which I realize you need a good primer crush . To me it looks like the primer is bottoming out on the primer pocket. I have had this gun a long time . Its pretty much new . I have never shot it until this year. Right now I'm almost positive that the bushing opening up is the reason why I have to dry fire the gun to get the primer out . That has just happened recently. I suppose to much back pressure on the primer ? I'm afraid that my action screw that holds my bolt and my action showing wear is because my head space needs opened up a little but not positive . I could have the gun worked on but would like to fix it myself . I need to learn this stuff.Thanks again for any help
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Post by doug136 on Jun 26, 2016 14:23:01 GMT -5
My primer pocket is clean .It's not carbon build up . I wish it was
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Post by doug136 on Jun 26, 2016 14:24:57 GMT -5
Sorry Hillbilly I just reread your post . I was correct in my thinking on my bushing . You confirmed my thoughts. Thanks
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Deleted Member
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Post by Deleted on Jun 26, 2016 15:43:21 GMT -5
You could open up the flame channel ....That would help out on the back pressure...There are quite a few shooters shooting a .040 bushing...It might be more beneficial with a .040 since you are shooting BH209....
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Post by doug136 on Jun 26, 2016 16:23:54 GMT -5
Really , I never thought about opening the flame channel to lower back pressure . Although I have not had any ignition problems with the .030 bushing . I really can't tell much of a accuracy difference or blow by . Just bugs me it opening up that much and not being able to get the primer out . Thanks
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Post by bestill458 on Jun 26, 2016 17:05:27 GMT -5
Is the bushing opened up to .038 all the way thru or just at powder side ?
The retaining bolt will get a flat spot on it initially and may need burr filed off tip. After initial wear in shouldnt change much at that point..
When you measure a new primer then cycle it thru gun how much does primer length change? Amount of crush on primer??
May just need a very slight headspace adjustment.
Your gun has the brand new boltface from arrowhead could be something to have checked out.
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Post by doug136 on Jun 26, 2016 20:05:00 GMT -5
I measured two new primers and two after closing the bolt .Primer goes from .296 to .290 . I don't know exactly how long the bushing is . I have not tried to take it out . I was afraid of destroying the bushing , I'm waiting until I get a new one . From the powder side it's.0395 going in a .5 inch . My .034 goes all the way through but sloppy, i dont have a gauge between that fits primer side exactly. Not sure how much longer the bushing is. I have filed on that retention screw a couple of times . It will work for awhile then it starts opening hard again .it does not get any burrs at the end of the bolt that I can see .
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Post by kbrezlin on Jun 26, 2016 20:45:57 GMT -5
Both of my 10ml2s I added the 3rd action screw exactly one inch in front of the factory rear screw. Now I only snug up the back screw and it solely is a bolt stop. That helped with the binding and makes it a lit easier to get the plug out.
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Post by doug136 on Jun 26, 2016 21:04:47 GMT -5
That makes sense . I'm trying not to over tighten that retention screw . I'm just using a small Allen wrench to tighten the bolt . But possibly I'm making it to tight ?
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Post by GMB54-120 on Jun 27, 2016 11:07:32 GMT -5
The retention screw sounds like a 2 part problem to me. .006 crush is on the upper end of whats needed to seal reasonably well and the retention screw is going into the bolt just tiny bit too far.
How do the primers fit in the breach plug by hand? Are they easy to insert all the way until it hits the shelf? Win209s go in mine very easily with just fingers, Feds are tight on the sides and CCIs are nearly impossible to get in there with just finger pressure. Im guessing by the .296 size they are either Feds or CCIs because Win209s are usually .300 or more.
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Post by doug136 on Jun 27, 2016 11:29:24 GMT -5
Fed primers . I opened up the primer pocket a little with coarse compound . They fit snug .
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Post by GMB54-120 on Jun 27, 2016 12:01:08 GMT -5
Do you have any Rem STS primers?...They are about the shortest and slightly smaller in OD too.
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Post by bestill458 on Jun 27, 2016 12:44:36 GMT -5
First thing is bushing is over .036 with 5/32 flame channel i would change out bushing. It was working before.
Retaining pin will wear a small flat on it which is fine just keep burr filed off of tip.
With action screws install just make sure bolt works freely.
I would recommend maintaining the small press fit of primer into primer pocket.
Yes.006 crush is a tick tight but build is new and id say you will lose .001-.002 with little seating in.
Now big question why bushing wear at 150 shots. Blackhorn is terribly abrasive on flash hole with a long pressure curve.
I don't have any answer but i do know shooting100 shots in 8 yrs will wear more than 100 shots in 10 years.
I don't have a answer but change bushing and see what happens.
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Post by billyboy on Jun 28, 2016 12:55:50 GMT -5
Won't help your Primer issue but something else that might allow easier closing of your bolt is to check to see if there is a slight burr on the "Horn" of the receiver / action where the 10ML-II bolt cams closed. My SS 10ML-II had one that had to be cleaned up with a file. Also keep that area lightly greased to prevent wear.
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Post by doug136 on Jun 28, 2016 14:02:00 GMT -5
Thanks
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