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Rifle is a Ruger Hawkeye 270. Rockchucker press with RCBS FL dies. Brass is once fired nickel brass. Resizer set-up per instructions approx 1/4 turn after touching shell holder. Problem is that after resizing the cartridge, it will not completely chamber{bolt will close but not lock down}. After seating a bullet{nosler baslistic tip} in a dummy rd the cartridge would chamber completely with no excessive force applied. This has really baffled me. Any comments would be appreciated!!! | ||
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Could be one of many reasons. 1. Case nees to be trimmed. 2. Bullet seated out too far. 3. Bulge in the body/shoulder area' (I've done this having the seater dies set wrong. It hits the case mouth and deforms the case at the shoulder.)  4. Sizer die set wrong not fully sizing the case. 5. Too much lube denting the case. | |||
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I seated the bullet in the resized case and it chambered without resistance and no force. Case was within specs for length. Im postulating that by seating the bullet it reduce the case headspace enough to allow chambering! | |||
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So what you are saying is that the resized case alone will not chamber, but after seating a bullet everything is fine?? Bizzare. The only way I could see that as possible is if your seating die is actually altering some portion of the case for some reason. Which doesnt speak well for the adjustment of the seating die OR your resized cases.  AK-47 The only Communist Idea that Liberals don't like. | |||
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to find the culprit I would take another piece of brass and measure the o.l. length, and the diameter of the neck just below the mouth of the case and pay attention to the mouth if its a once fired factory load the mouth will be a little ragged from being crimped. resize the case and measure again. Take the case and seat a bullet measure the o.l. length of the case and the diameter of the neck and see what has changed? When seating the bullet you may be slightly crimping the case. Dave | |||
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could be the expander ball is pulling the shoulder forward,then when you seat the bullet its setting it back a little. if your not lubing the inside of the neck try a little hornady one shot case lube,its a dry lube wont hurt nothing. | |||
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Could it be that the cases are too long and hitting the end of the chamber? Then when the bullet is seated the seating die is crimping the case and allowing it to fit inside the end of the chamber. Frank "I don't know what there is about buffalo that frightens me so.....He looks like he hates you personally. He looks like you owe him money." - Robert Ruark, Horn of the Hunter, 1953 NRA Life, SAF Life, CRPA Life, DRSS lite | |||
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This would be my suspicion. Have gun- Will travel The value of a trophy is computed directly in terms of personal investment in its acquisition. Robert Ruark | |||
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Resizing die set per RCBS instructions. The cases have been measured and are within spec post resizing. | |||
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I have not lube inside the neck and that could possibly be the problem.. Will give it a try next reloading session!! Thanks to all!!!!!!!!!! | |||
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Just because you have set up your die as per the instructions does NOT mean the cases are to spec unless you have measured them, have you measured a fired case and compared it to a sized case? I'm not talking OAL here, but the length from base to datum on the shoulder. One thing the instructions don't mention is that a case elongates before the shoulder is pushed back, if the die does not push the shoulder back below chamber length, you will have hard chambering. To do this correctly, you need a RCBS Precision Mic in your calibre, this will allow you to precisely bump the shoulder by .002" each and every time you resize your brass, extending brass life and making easy chanbering. Cheers. | |||
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I only neck size and have been using my 270 for decades. I do cycle each and every loaded round I'm going to take hunting through the action though. If you have more than one 270 though, this is not an option. Regards, Chuck "There's a saying in prize fighting, everyone's got a plan until they get hit" Michael Douglas "The Ghost And The Darkness" | |||
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You must be new to reloading. I think you should stop and start to think how many rounds you use a year. A 270 Win used for most big game hunting should not need more than 40 rounds a year if it is already sighted in and that ammo is what you are going to hunt with. I think if you are going to reload for a rifle then it should be for that rifle only and tuned to give the best most accurate load. Setting the resize die for that gun should start with taking out the decapping assembly and setting the die so it just resizes for that rifle's chamber and headspace. Then the decapper is set to just push out the old primer but not hit the neck sizer bushing into the bottom of the case. Your instructions should tell you how all this is done. But I don't think 1/4 past touching the shell holder is the best. My press and dies are sometimes set a little above the shell holder. This is to resize the neck and parcel size the body. This will fit in the gun I am using it in every time but is not over sizing. Seating depth for your bullet of choice is also custom set for your rifle and range tested for best accuracy. I would start with good brass and not that nickel plated stuff you have. And I would read some more loading instructions like from Sinclair Int. Unless you are doing high volume pistol or shotgun it maybe better just to buy factory for hunting | |||
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LGN, I've never set-up an RCBS F/L Die according to their instructions and I've got 47 sets of RCBS F/L Dies (also 1 Lyman set) anda coupla years under my belt doing this. Use a candle to soot (blacken) the neck/shoulder area of a 270 (preferably 1X fired in your rifle) case. DO NOT use a case that you have just set the shoulder back when using RCBS's intructions. Adjust the F/L die down in the press until the soot is wiped off the neck exactly at the point of the neck/shoulder junction. Adjust & tighten the locking ring - F/L die is now adjusted for length - Voilá. Then loosen the expander ball stem, and adjust the length below the bottom of the F/L die to a point where it will reliably push an expended primer out of the primer pocket every time (@ 5/16" or 3/8") below the bottom of the die. You can easily see this point when looking into the shellholder from the side. Do not retighten ...... Put a lubed (not too much ....) case in the shell holder and prepare to F/L size (now you'll note there is daylight (probably) between the bottom of the F/L Die and the shellholder). On the up stroke after you have sized the case allow the expander ball to remain in the neck of the case and THEN tighten the expander ball stem. Your F/L die should now be good. Take your seating die and turn it into the press. With a 270 case in the shellholder; and the ram in the up position, turn it down until the seater die will not turn any more because it has hit the top of the 270 case. This where the crimping feature starts in the seater die. Now back the die out 1 complete turn and adjust and tighten the locking ring. You can now seat a bullet without using the crimping feature. Cheers, Number 10 | |||
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Thanks again for all the insight. | |||
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This is how you do it.  Have gun- Will travel The value of a trophy is computed directly in terms of personal investment in its acquisition. Robert Ruark | |||
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