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Post by riverboss on Nov 5, 2015 16:18:06 GMT -8
I loaded a few 95gr sst for deer 27gr 8208 290 length its a 18" BH barrel 1/9 twist. It shoots about 5" higher than my reg 55 gr load . here's my question I'm using SSA brass its there 3rd loading full length resize with CD40 dies after I got done I picked up my brass and 2 had the primers missing and the brass lip from extracter is bent. Is this from over gas and just loose primer pockets or a pressure sign?
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Post by GLSHOOTER on Nov 5, 2015 19:26:33 GMT -8
If you're loosing primers the pressures are too high. You are stretching them through the loading. It is possible to ruin some brass in a single loading and lots can be ruined in two. Pressures can rise from shooting to close to the lands. Also what primers were you using?
The extractor is taking a pounding possibly due to early opening from over gassing. Are the rims ripped up?
Greg
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Post by riverboss on Nov 5, 2015 23:38:39 GMT -8
Fed be primers and yes on the 2 that did it the lips are stretched. I have adjustable glass block but have noticed primers are getting easy to push in with hand primer.
Should 27 gr cause this I would think that shouldn't be high?
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Post by GLSHOOTER on Nov 6, 2015 6:20:27 GMT -8
That load is not all that hot. You had better measure the distance to lands on that bullet. Until you do that don't shoot that load. It sounds like you are jammed big time.
Gref
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Post by riverboss on Nov 6, 2015 15:48:39 GMT -8
Thanks I've never done it but have read about it I will try this weekend. I did look at a round that had been chambers and it didn't appear to have any rifling marks on it.
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Post by GLSHOOTER on Nov 6, 2015 15:57:15 GMT -8
Thanks I've never done it but have read about it I will try this weekend. I did look at a round that had been chambers and it didn't appear to have any rifling marks on it. These poly barrels are so gentle on the engagement it is VERY hard to see. We recommend that anyone shooting the variants get a Sinclair Distance to Lands tool just for these issues. Greg
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Post by peabody on Nov 6, 2015 16:15:09 GMT -8
I've been researching reloading 264 LBC (because I just received my BHW 18" 1:9 twist barrel so I can justify my avatar ), with a primary focus on the COLs (or COALs) for the bigger pills. I've come across a couple of forum threads where the bullets weren't seated deep enough for some BHW barrels, specifically - these being problems with specific reloads, not the barrels. But it was hard for the individuals experiencing the problems to diagnose because the 3 poly rifling doesn't tend to leave any marks on the bullets from the lands. Take that with a grain of salt - I'm just doing my preparatory research. I'm arm chair quarterbacking with the Google search playbook... Greg has recommended using a Sinclair gauge to measure the depth of the chamber to determine the seating depth for your individual barrel. Again, I'm regurgitating what I've read. No hands on experience yet.
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Post by riverboss on Nov 10, 2015 15:57:13 GMT -8
Have you used the Frankford arsenal case length gauge? And would it work on a ar?
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Post by GLSHOOTER on Nov 10, 2015 18:49:13 GMT -8
Have you used the Frankford arsenal case length gauge? And would it work on a ar? That's a knock off of the Sinclair tool. It could he made to work on an AR. The Sinclair has some spacers designed for various bolt action sizes along with the AR15 and AR10. Greg
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Post by peabody on Nov 10, 2015 21:00:40 GMT -8
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Post by GLSHOOTER on Nov 11, 2015 6:43:52 GMT -8
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lerms
Senior Member
Posts: 113
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Post by lerms on Nov 14, 2015 5:07:52 GMT -8
I'm new to reloading and all the tools Greg just suggested, he also suggested to me when I was getting started. They are worth every penny.
Lerms
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Post by bobatl on Nov 14, 2015 6:33:07 GMT -8
For a temporary effort, try the split neck method, where the fired empty case is cut/split along the neck and the bullet in question is used to find the lands contact. Believe its described here and on other forums. I did this for a while, but it can be touchy getting the friction (split neck diameter) vs bullet, correct. A proper gauge is more reliable, I have the Hornady version, saves time with fewer do-overs.. For the Hornady gauge you'll need the 6.8 reference case then downsize the neck to 6mm, then upsize it a few thou, bullet needs to slide freely.
Also, the shoulder to base length can be measured by the 6.8 REM gauges from Whidden case gauges, a slick stand-alone gauge.
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Post by GLSHOOTER on Nov 14, 2015 6:38:23 GMT -8
For a temporary effort, try the split neck method, where the fired empty case is cut/split and the bullet in question is used to find the lands contact. Believe its described here and on other forums. I did this for a while, but it can be touchy getting the friction (split neck diameter) vs bullet, correct. A proper gauge is more reliable, I have the Hornady version, saves time with fewer do-overs.. For the Hornady gauge you'll need the 6.8 reference case then downsize the neck to 6mm, then upsize it a few thou. Or drill and tap a fired case. It takes about ten minutes to make one. If the necks are tight from not quite enough expansion just go in with a cratex tube and open the inside up. That way you have a slip fit case that is closer to real than the factory cases. There is quite a bit of leeway on the standard cases. Of course you could be rich and well healed and send a couple cases to Hornady and they will convert them for you. I think I have made up around fifteen of them for various chambers. Greg
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