Mine go in the chamber fine, but the problem is when it goes in and doesn't come out.. Then you have blown primers and everyhting else that can go boom in a a bad way....
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Problem With SSA Sticking in Chamber
I have had a problem with ssa 6.8 110 pro hunter round as a box of them will not feed into the chamber and will get stuck, I was hoping it was not the upper and after a go guide fit the chamber I was convienced it was the ammo. one of the 15 i had on hand fit into the chamber and ejected with no problems. I still have not fired it yet as it is driving me crazy, but my problem might be the with the casings. I just got home and yes a box of rounds were sticking, and now after i got home more than three boxes were sticking I randomly pulled 6 rounds from 6 more boxes and they stuck. Everyone of the soft points were marred but i expect that from the feed ramps, but each one of the copper jackets have the same nicks and scratches in the same pattern. So I took a 30 caliber brush and gently pushed in into the chamber to try to remove any burrs or extra metal. After that I flushed out the chamber with gun scrubber and recleaned and oiled the bore and chamber. I ran a random box of soft points, the first on fed so i cycled the gun twice more and the third stuck. after pulling it out i loaded 8rnds total and all of them cycled. Of course the SP are nicked up, but so are the copper jackets. They seem to be feeding smoother, but could a bur or anything else be the cause of this? Their is a pattern of an arch on the jackets and the marred soft points. The first two starts on the left and runs to the right down the jacket and the third fourth fifth and sixth all have deeper gouges as well as the run on the other side. The second to last on the right side has four nicks that you can see running down the jacket. As I fed 12 more from the same box all of them have similar markings one of them has a piece of the jacket looking like a thin piece of metal was shaved off, and that same round has three nicks on the shoulder of the casing. But the FACT Remains, some of the ammo feeds consistently, and some do not it is as of right now around three of every twenty that are jamming. Over pressure can be a real problem here can it not? Is it safe to shoot any of this stuff? I really need to go sight in my rifle asap. So is this ammo, or chamber? the Go guide should be larger than the bullet right? Thanks for your help.
21 - 40 of 56 Posts
I did check into this further and posted over in my area, there appears to be a small lip at the edge of the brass. If reloading new cases chamfer the inside and outside of the neck and resize the new cases.
Also just so you know the new ammo replaced by ssa feeds and functions perfectly and I was able to shoot 1/2 inch groups at 100 yards, very nice upper H thanks for everything
Glad everything is working out finally.
Glad I found this. I feel more confident about shooting my upper.I had a similar problem with one round of SSA the last time at the range. One round fed and the bolt did not close 100% and it took quite a bit of pull on the charging handle to yank that sucker out. But stuck it back in the mag, inserted and hit the bolt release. No problem. Just one of those things that makes me go...hmmm?
I bought a POF upper(in 6.8), and had everything ready to go to sight it in (February).
The first round I tried to chamber was an SSA Pro Hunter. Well same happened to me; "the bolt did not close 100% and it took quite a bit of pull on the charging handle to yank that sucker out." Next round was same (PRO hunter too).
Kinda scared the shit out of me, and I decided against firing it. I then ran into some work and health issues, and I haven't had the abiltiy to chase down the problem; outside of looking at it being the upper chamber. Which seemed ok.
Later, I was able to cycle an SSA 115OTM, but I was/am still shy to run the gun given the previous "stuck" rounds.
I also have 90 TNT and I haven't tried them either (the few I grabbed from the boxes do drop in and out of chamber). I did notice the "ridge" that constructor mentions on the PRO Hunter AND also on the TNT. My SSA 115OTM rounds do not have this ridge.
Unfortunately, my caliper batteries are low, and I can get a couple measurements with them at a time. What I seem to be seeing is that the PRO Hunter(s) that have a measurement about .305 to .3055, and the 115OTM gets slightly smaller measurement of .3035 to .304. To me, this seems too small to make a difference? But I am no expert.
So do I have a "PRO Hunter problem", or is it more? The ridge on the TNT worries me. Does anyone/everyone else have a ridge on their TNT rounds?
I bought the PRO hunters at a retail store. The other rounds were ordered from Palmeto.
Quick summary: PRO Hunter round(s) get stuck (only 2 that I know of). 115OTM and TNT (the few I tried) drop in and out of chamber. Can I finally shoot this thing? Just avoid these PRO Hunters? I only have 2 boxes of PRO's, could it just be a round or two, or are both boxes doomed (bought at retail store)?
Constructor, you say that you have info about the SSA "ridge" at your area. where is your area? EDIT: found the AREA
Thanks.
Of my personal experience, it was more than half of the pro's that got stuck per box and i had 15 boxes, I personally think that sierra had a bad batch of bullets, as Jet suppressors measured the casing and concluded the casing was correct, but the bullet was a little swollen causing the problem. My advice is try a couple more from the other box and see what happens, just grab the handle and tap the butt of the stock they will come out. then you will know if it was both boxes or just one
If the bullet was indeed oversize...I would be MUCH more likely to believe it was damaged during the loading process.I personally think that sierra had a bad batch of bullets, as Jet suppressors measured the casing and concluded the casing was correct, but the bullet was a little swollen causing the problem.
Sierra is an ISO 9002 plant and due to legal liability they 100% inspect every projectile...multiple times.
There is automated gaging that measures the finish swaged bullet for maximum diameter and SPC (statistical process control) records are kept on every production batch. They are then hand inspected again for any cosmetic flaws that the dimensional gaging can't address.
I have been buying their cosmetic "rejects" for years and have yet to encounter a single over size bullet. They are extremely consistent in size.
However, during the loading process any number of operations could damage a bullet or series of bullets.
Just my $.02....
Kerry
Quite possibly you are correct, as I have much to learn in the bullet/ casing / reloading area. I was just stating what a gunsmith was telling me. Most importantly if he does have a problem with some sticking he just needs to contact nancy or art at SSA. Unless 2 boxes isn't worth his time to get replaced. When the bullet that stuck in my chamber was measuered it came at .278 right above the neck. I guess that is why he colcluded the bullet came swollen from Sierra. Either way, they rounds just aren't safe to use and should not be fired.
During the manufacturing process at the tapering operation a condition (as we call it a donut) can appear at the bottom of the neck. As you taper a case the metal has to go somewhere, basicely the wall thickens and in some situations a donut will appear on the inside of the neck above the transition area of the nick and shoulder . A lot of compaines will work around this issue by making the neck wall as thin as possible so if there is a donut it does not affect them, however by making the wall thin you give up accuracy and number of reloads.
SSA keeps the neck a little heavier to improve accuracy and increase the number of times you can reload. I checked our records and it appears that we did have a donut in the time period and that they thought they had sorted them out of the system. If anyone has a problem please contact us and we will replace any rounds you have.
The rounds will not increase preasure.
Art - SSA
SSA keeps the neck a little heavier to improve accuracy and increase the number of times you can reload. I checked our records and it appears that we did have a donut in the time period and that they thought they had sorted them out of the system. If anyone has a problem please contact us and we will replace any rounds you have.
The rounds will not increase preasure.
Art - SSA
Thanks for the explanation Art, this is one of the reasons I consider SSA the best in the buisness.
ssa brass donuts
Art,
Are there production run numbers on the boxes we should look for? I just bought a bunch of SSA rounds, or do I have to try to fire them to see if there is a problem?
Art,
Are there production run numbers on the boxes we should look for? I just bought a bunch of SSA rounds, or do I have to try to fire them to see if there is a problem?
I just got through checking random rounds in 2 of my 10 boxes of Tactical Loaded 110 ProHunters.
In my SAM-R with the DMR chamber, the rounds I tested would jam when the bolt was released and I had to pull the charging handle and bang the butt on the ground to remove the rounds. My Tactical Loaded and Commercial Loaded 115 gr OTMs worked fine.
The same rounds that would jam in my SAM-R fed and ejected effortlessly from my SPC II chambered gun. To save some money on shipping I will just have to relegate my ProHunters to the SPC II chambered gun. Oh well. I will hopefully have some powder and be able to load my own ProHunters to fit the SAM-R soon.
In dropping the rounds into the chamber you could see that they did not fully enter the chamber on the SAM-R and even required bouncing the butt on my leg to get them to fall out of the chamber. With the SPC II chamber they dropped in further and then fell out when you elevated the muzzle.
In my SAM-R with the DMR chamber, the rounds I tested would jam when the bolt was released and I had to pull the charging handle and bang the butt on the ground to remove the rounds. My Tactical Loaded and Commercial Loaded 115 gr OTMs worked fine.
The same rounds that would jam in my SAM-R fed and ejected effortlessly from my SPC II chambered gun. To save some money on shipping I will just have to relegate my ProHunters to the SPC II chambered gun. Oh well. I will hopefully have some powder and be able to load my own ProHunters to fit the SAM-R soon.
In dropping the rounds into the chamber you could see that they did not fully enter the chamber on the SAM-R and even required bouncing the butt on my leg to get them to fall out of the chamber. With the SPC II chamber they dropped in further and then fell out when you elevated the muzzle.
+1 on giving us a heads up on box/lot numbers...
Check the necks of the loaded rounds if you can the SAM-R is a target chamber and required the neck to be less then .307 to chamber properly. If you are going to reload for your SAM-R it is recomended that you neck turn to .012 for the best accuracy.....I just got through checking random rounds in 2 of my 10 boxes of Tactical Loaded 110 ProHunters.
In my SAM-R with the DMR chamber, the rounds I tested would jam when the bolt was released and I had to pull the charging handle and bang the butt on the ground to remove the rounds. My Tactical Loaded and Commercial Loaded 115 gr OTMs worked fine.
The same rounds that would jam in my SAM-R fed and ejected effortlessly from my SPC II chambered gun. To save some money on shipping I will just have to relegate my ProHunters to the SPC II chambered gun. Oh well. I will hopefully have some powder and be able to load my own ProHunters to fit the SAM-R soon.
In dropping the rounds into the chamber you could see that they did not fully enter the chamber on the SAM-R and even required bouncing the butt on my leg to get them to fall out of the chamber. With the SPC II chamber they dropped in further and then fell out when you elevated the muzzle.
Thanks Adam. I forgot about this post and fired one of the ProHunters out of my SAM-R a couple of weeks ago and it punched a nice hole in a piece of 3/8 steel. Ejection was consistant with the other ammo I shot so I will need to check all the primers on the brass to if there is anything of note. The 90 gr Speer TNT did the same thing but the OTMs and VMAXs only cratered it. The interesting thing to note though was that the commercial load made a deeper crater than the Tactical load.Check the necks of the loaded rounds if you can the SAM-R is a target chamber and required the neck to be less then .307 to chamber properly. If you are going to reload for your SAM-R it is recomended that you neck turn to .012 for the best accuracy.....
I am not sure of the location of the measurement you are talking about on the neck turn to .012, I will need to pull some of the rounds out and measure the necks on these.
Actually the DMR is a MATCH chamber as the description says and was designed from SSAs brass size 3 years ago. It will handle ammo with .305 necks and no more. It will not shoot any SSA factory loads as they are made today but will shoot the hottest prepped handloads.Thanks Adam. I forgot about this post and fired one of the ProHunters out of my SAM-R a couple of weeks ago and it punched a nice hole in a piece of 3/8 steel. Ejection was consistant with the other ammo I shot so I will need to check all the primers on the brass to if there is anything of note. The 90 gr Speer TNT did the same thing but the OTMs and VMAXs only cratered it. The interesting thing to note though was that the commercial load made a deeper crater than the Tactical load.
I am not sure of the location of the measurement you are talking about on the neck turn to .012, I will need to pull some of the rounds out and measure the necks on these.
DO NOT CONFUSE THE DMR WITH THE DMR-C.
THE DMR WAS ONLY USED IN THE SAM-R.
EQ the first number is as meassured from the outside with the bullet loaded into the brass. the .012 neck thickness I can only do using calipers put into the case mouth. I need to get one of the neck thickness tools but the calipers seem to do a decent job.... I have found I can shoot some of the SSA ammo and not others through the SAM-R so now to be honest I just shoot the new ammo in my MK68 (which I have not had any issues with) and then use the brass to load for my SAM-R
Thanks A. I think what is needed to actually measure the thickness of the neck wall is called a ball micrometer.
Here is one http://www.midwayusa.com/viewProduct/?productNumber=257288, now I need to buy another tool, plus a case neck turner, oh boy.:a45: And I am getting new windows put into the house so all my funds are now dried up.
Here is one http://www.midwayusa.com/viewProduct/?productNumber=257288, now I need to buy another tool, plus a case neck turner, oh boy.:a45: And I am getting new windows put into the house so all my funds are now dried up.
I am having this EXACT same problem.I have had a problem with ssa 6.8 110 pro hunter round as a box of them will not feed into the chamber and will get stuck, I was hoping it was not the upper and after a go guide fit the chamber I was convienced it was the ammo. one of the 15 i had on hand fit into the chamber and ejected with no problems. I still have not fired it yet as it is driving me crazy, but my problem might be the with the casings. I just got home and yes a box of rounds were sticking, and now after i got home more than three boxes were sticking I randomly pulled 6 rounds from 6 more boxes and they stuck. Everyone of the soft points were marred but i expect that from the feed ramps, but each one of the copper jackets have the same nicks and scratches in the same pattern. So I took a 30 caliber brush and gently pushed in into the chamber to try to remove any burrs or extra metal. After that I flushed out the chamber with gun scrubber and recleaned and oiled the bore and chamber. I ran a random box of soft points, the first on fed so i cycled the gun twice more and the third stuck. after pulling it out i loaded 8rnds total and all of them cycled. Of course the SP are nicked up, but so are the copper jackets. They seem to be feeding smoother, but could a bur or anything else be the cause of this? Their is a pattern of an arch on the jackets and the marred soft points. The first two starts on the left and runs to the right down the jacket and the third fourth fifth and sixth all have deeper gouges as well as the run on the other side. The second to last on the right side has four nicks that you can see running down the jacket. As I fed 12 more from the same box all of them have similar markings one of them has a piece of the jacket looking like a thin piece of metal was shaved off, and that same round has three nicks on the shoulder of the casing. But the FACT Remains, some of the ammo feeds consistently, and some do not it is as of right now around three of every twenty that are jamming. Over pressure can be a real problem here can it not? Is it safe to shoot any of this stuff? I really need to go sight in my rifle asap. So is this ammo, or chamber? the Go guide should be larger than the bullet right? Thanks for your help.
110 Pro Hunters, MK68 upper. I have yet to fire the rifle because it's mangling every round I try and cycle through it. The rounds are not getting stuck in the chamber, however-- they are only failing to feed or getting really banged up to the point that it's clear something's wrong.
What should I do about this? I don't have any reloading tools to measure case dimensions with, so I am concerned that the ammo is not right somehow-- every single round shows the scrape pattern he described on the neck, and deep gouge/shaving off of the lead on the point...
MDLE-
So your rounds are failing to chamber? What mags are you using? you may need to tweak the feed lips a little so the rounds are angled up slightly.
So your rounds are failing to chamber? What mags are you using? you may need to tweak the feed lips a little so the rounds are angled up slightly.
21 - 40 of 56 Posts
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