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Rifles, Reloading, Optics, Equipment
Reloading
Adding diameter to 45-70 bullets (to .4595)?
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<blockquote data-quote="memtb" data-source="post: 2139946" data-attributes="member: 75451"><p>Les, to answer both of your questions!</p><p></p><p>Slugging a barrel: my method, is.....get a pure lead fishing sinker, tapered in shape, larger than the maximum expected bore diameter. I just pushed a sinker of about 0.325" into the bore of a .270 Win. Liberally coat the bore and the lead sinker with a lightweight oil, insert the tapered end of sinker into the bore, drive it (very carefully) into the bore. I use a small ball peen hammer, being careful "not" to contact the barrel crown. If you are uncomfortable with this.....a small "dead-blow" hammer will also work nicely. The excess soft lead will be shaved off by the barrel. I then use a brass rod smaller in OD than the barrel ID, and drive the lead through the bore, allowing it to fall into the breech area.I just used a 1/4" brass rod on three rifles from, .270 Win, through my wife's .338 WM, I used a 5/16" rod on my .375 AI. Though, I'm sure the 1/4" rod would have done the job! Then you simply "mic" the bore groove (high points) 180 degrees apart. </p><p></p><p>Not all firearms have the grooves directly opposite each other, which pretty much screws up the measurement. I just had that happen on my S&W 629! <img class="smilie smilie--emoji" loading="lazy" alt="🤬" title="Face with symbols on mouth :face_with_symbols_over_mouth:" src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f92c.png" data-shortname=":face_with_symbols_over_mouth:" /></p><p></p><p>Powder Coating: It does add to bullet diameter, approx 0.002". Different coatings add different thicknesses. If one coating still leaves you lacking.....do another powder coat. You will gain a bit more!</p><p></p><p></p><p>Good Luck! memtb</p></blockquote><p></p>
[QUOTE="memtb, post: 2139946, member: 75451"] Les, to answer both of your questions! Slugging a barrel: my method, is.....get a pure lead fishing sinker, tapered in shape, larger than the maximum expected bore diameter. I just pushed a sinker of about 0.325” into the bore of a .270 Win. Liberally coat the bore and the lead sinker with a lightweight oil, insert the tapered end of sinker into the bore, drive it (very carefully) into the bore. I use a small ball peen hammer, being careful “not” to contact the barrel crown. If you are uncomfortable with this.....a small “dead-blow” hammer will also work nicely. The excess soft lead will be shaved off by the barrel. I then use a brass rod smaller in OD than the barrel ID, and drive the lead through the bore, allowing it to fall into the breech area.I just used a 1/4” brass rod on three rifles from, .270 Win, through my wife’s .338 WM, I used a 5/16” rod on my .375 AI. Though, I’m sure the 1/4” rod would have done the job! Then you simply “mic” the bore groove (high points) 180 degrees apart. Not all firearms have the grooves directly opposite each other, which pretty much screws up the measurement. I just had that happen on my S&W 629! 🤬 Powder Coating: It does add to bullet diameter, approx 0.002”. Different coatings add different thicknesses. If one coating still leaves you lacking.....do another powder coat. You will gain a bit more! Good Luck! memtb [/QUOTE]
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Adding diameter to 45-70 bullets (to .4595)?
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