Cases which were previously reloaded several times as rifle rounds must absolutely be annealed first! Instructions on how to anneal rifle brass: Annealed rifle brass usually fire-forms perfectly in one pop. RWS 9.3x74R fire-forms nicely to produce a 2-3/4” case which holds a full ¾ oz. 303 straight case will be 2.25" in length and hold ½ oz of shot. Fire-form the case by pointing the muzzle straight up when popping it off. Push a cotton ball or one crumpled square of TP firmly onto the powder, then fill the case with corn meal and press a paraffin wax plug into the case mouth. Anything from Bullseye to Herco or Blue Dot will work. Charge primed cases with ten grains of any fast-burning pistol or shotshell powder you have around. 303 British or 9.3x74R cases, they must be fire-formed first. This "works," but is less than perfect because doing so often requires thinning of the case rims, if your break-open gun has tight head clearance. Internet experimenters frequently suggest using fire-formed. 410 metallics are also quite different from using paper or plastic shells and wads. Load data, wad assembly and crimping techniques for loading. 410 shotgun rounds may not feed reliably in repeating guns, and are best limited to the break-opens. Loading your own in fire-formed common rifle brass, using improvised dies is VERY attractive if you only need a few. Buckshot, slugs and specialized personal defense loads are double or more of that. Fine shot target and bird loads run over $1 a pop. 410 shotgun cartridges are hard to find and very expensive today, if you can find any at all!. 410 All-Brass, or Milsurp Military M35 Aluminum Shellsįactory-loaded.
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