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Scar 17 Ammo HELP??!!??

2946 Views 22 Replies 9 Participants Last post by  wespac78
Im pretty new to reloading and the scar 17. Ive been hand loading my shells using what I think is top end equipment. Starrett Calipers, SHO Laboratory scales(formally Gempro scale), forrest precision dies...One at a time low and slow! I use lapua brass CCI primers IMR 8208 XBR and Hornady A Max bullets in the following receipt.
Lapua Brass
CCI 200 Primer
42.500 Grains of XBR
168 grn Hornady A max
2.000 trim
2.8005 COAL

Here is the issue Im having. I expect a gas gun to "beat up" the brass some, but Im getting some what I would describe as a deep knife line around the top of the brass right where the bullet exits and Im assuming this is from the extractor??!!??
The main issue is fired brass will NOT cycle through my sizing/decapping dye. It literally jams everytime. Here are the "New" case neck measurements vs "fired" case measurements:
New: 2.000-case .3345 OD on the very end .3025 ID at same point .2905 from tip to beginning of shoulder.4745 from tip to the end of the shoulder
Fired: 2.001-Case .3445 OD on the very end .3145 ID at same point .295 from tip to beginning of shoulder .4625 from tip to the end of the shoulder

Also the sharp edge on the trailing end of the extractor is what i "Think" is the culprit for damaging my brass as I used a black sharpie to color a shell so I could see the drag points. Can you slightly round over that trailing edge to create more of a "cupping" action than a sharp abrupt edge that it bangs against. Im sure there are plenty of Scar GODS on here that can help me out with their superior knowledge! If you need any additional data or measurements let me know. THANKS in advance!
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My rifle has seen nothing but hand loads but the above receipt is the hottest I have gone to date.
Just a question. Are you lubricating the cases before running through your sizing die? If not, that could be the reason your cases are jamming in the sizing die.
i was lightly lubricating the shells at first and then when I ran into this issue I tried over lubricating the heck outta the shell to try and eliminate that as a possible cause.

Also the scratch on the brass isn't a big deal and I do polish it out about 90% in the cleaning process but it just seemed a smidge to deep.
I'll post a picture of the fired brass vs the new unfired (but sized) when I get off work...thanks for all the help so far. I may post a video of a blank brass ejecting slowly so I can show when and where I believe it to be dragging
Ammunition Brass Wood Bullet Metal

Ive tried CLP lube and RCBS assembly lube (for bullets) and apply it with a nylon round brush inside each bullet.
Fired on Left and unfired on right...you can see the small scar the rifle left in top on the brass...Ill try to take a better pic after dinner. Gotta feed my 4 kids lol!
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I tried the hornady one shot spray lube as well...since I had some simply laying around... Uploading a video....posting soon
OHH MY JESUS!!! Well I got them all to work in about 2.1 seconds....I got a NEW can of that hornady lube thinking mine was old....and used that...All 20 shells went through without a hiccup....That absolutely AMAZES ME!!!! No other lubricant would do it. That truly blows my mind! I would still like to post a video of the extraction process to see what you think about the impact point. Thanks for all the replies thus far..I REALLY appreciate it!

Ejection seems to ride that sharp edge of the extractor and not in the "cup" normal?

Ammunition Material property Bullet Metal Pen
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Were you lubing bullet seating and not case sizing?
Theonly thing I can think of is that is was an old can of lube and it had possible broken down and wasn't lubung properly...still, blows my mind that the clp, rem oil, and rcbs assembly
lube wouldn't work!
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