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Hmmm small base dies......


minerjoe01
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Howdy. Yep, i'm new here! Anyway i traded an ounce of gold for a 300 wsm R1 NRA gun. I mounted a varyx3 on it and shot it for the first time yesterday with winchester bal tip 150gr. It did ok for an auto, being i was not on a bench. The gun had never been shot, but after the 10th shot things got wierd. It stovepiped a lot and was all over the place. I brought it home and stripped it, cleaned the bore, and the piston. It wasn't that bad. So then i went to the bench and loaded up the 20 rounds i had shot earlier. Well, when i put the first bullet painted to find seating depth, it wouldn't go in. I called my old man and asked him what i did wrong. He asked if i had bought rcbs dies. Yep. i did i told him. He said take em back if you can. You need redding dies or any other make of dies. Rcbs makes no small base dies for that caliber. So i'm just wondering what could cause this gun to jam being new. I did oil all the parts before i went out. Thank you for any help. joe.

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Your dad was correct. Semi-Automatic rifles require brass that has been full length resized with a small base die set. The reason yours jams and stove pipes is becasue the base of the brass (the area just forward of the rim) is little large. After you get the die set be sure to use a high quality case lube and full length resize. Also remember to remove the lube before chambering. I assume you were using factory ammo for the first 20. It sounds like you may have a weapon with a tight chamber, where just a little bit of fowling will cause malfunctions. It could have been cut with a reamer that was getting ready to be retired. If this problem continues after using small base resized reloads, take it to a gunsmith to have the chamber checked.

Edited by blueroller
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Thanks for the replies. Yeah that first 20 was factory winnchester nickel plated brass. Maybe that too, could make the cases bigger... Anyway, after i thought about it the 300 savage rounds i loaded up i had yet to try them in the model 99e. Well same crap! Well i guess i sound really smart about now but i've been loading a number of different guns for years. I always heard that the autos were difficult, along with the 300 sav. So, i have two weeks to elk season, and i hope i can get this done. I thank you guys a bunch for the help. I guess i can just drive down to the RCBS main office its only 70 miles away from here. I'm off to cabelas in the morning for my SMALL base dies! I'll get back to you guys.

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Just got back from the range. THe R1 shot very well. Only shot it at 100 yards. The groups were inside one inch. THe load i used was 67 grains of RL22 with 165gr nosler partition bullets. The only thing is the necks on the winchester brass cracked on six of them, anybody know why that is?

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Ok now i need help. I brole it down and cleaned it very well, but it still jams! like 60 percent of the rounds stovepipe, but the next round is in the chamber. I dont get it.... I shot a 2inch group today at 200 yards. I used my handloads, and federal fusion loads. It jammed with both of them. Please help me figure this out, i only have ten days till idaho!

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Ok i think i've got it figured out now. When i cleaned it this time, i looked down into where the spring on the piston assembly is. There is a tapered piece that must meter the pressure or something, but this part was very corroded. I know this gun was new and how it got that bad so fast is wierd. Anyway i hope that was it!

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