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Posted: 2/24/2005 6:22:17 PM EDT
| Shot some reloads today that were resized with a std fl sizing die and had a few that wouldn't chamber well. If I use the small base die will it help the chambering problem? |
| Nope, you do not need a small base die, the rounds you used that would not chamber well was due to improper sizing, the die needs to be screwed further down. You should always use a two piece headspace gauge to set up your dies. (bet who ever reloaded them does not) True small base dies are for SAAMI min. dimensioned chambers, such as you would find in a bolt action rifle. If you do not size the cases properly even in a small base die you will have the same problem. The problem is not the base or body size it is the headspace they are to long for your chamber. To confirm this check the questionable cartridges in a headspace mic. the 2 piece screw together kind. Modern .223 dies are actually between a standard die and a small base die and are appropriate for your AR |
| I like the RCBS one, I have one for each caliber I reload for. I recomend you also get a standard type headspace gauge (like you would use in the chamber) to verify the RCBS gauge. Or maybe you could borrow one, or have a gunsmith check the RCBS gauge. RCBS claims an accuracy of .001 but I have seen them off by .002 I like the RCBS unit because it also comes with a gauge for the chamber, you can then measure the distance from the bolt to where the rifling starts. And then be able to seat your bullets for best accuracy in your individual rifle. with respect to magazine length of course. The RCBS unit will also allow you to consistently set your die to the same setting if you do not leave the die in the press as when using a single stage press. In my opinion all dies set up for an auto loader should be checked with a gauge like this when setting up a die for safetys sake. The problem with the old wise tale of screwing the die down to the shell holder with light, firm etc contact is, individual dies will vary and have been seen manufactured way out of spec. also when resizing there is a smal amount of "spring back" this will vary with different brands of brass and lots of the same giving different headspacing. The only way to know for sure is to check with these 2 piece screw together gauges like RCBS makes. There better then using a stoney point (more accurate) and give you the best value for your money. A bonus is you can monitor throat erosion with the chamber gauge that comes with the set. Expect to pay about 35.00 for a set, available where ever RCBS is sold, I can send you wholsale mail order sources if you like. I do not know how to post pics here but I can send you pics and part no,s if you want to IM me your email addy. Hope this helps. F.A. |
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