Hello, and welcome to the Reloading Podcast here on the Firearms Radio network.
Tonight the guys are answering questions about gas checks, loading for rifle, and the Sonoran Desert Institute.
G'day, Mal here.
I have been listening to your podcast for quite a while now and I need your help with understanding something. As you have probably guessed, I live in Australia and am restricted to mainly bolt action longarms, which is fine with me as my interest is in old Mosin-Nagants.
I have started reloading recently and am happy with my handloads with the 7.62x54R. I have been using a jacketed 150 grain spitzer with 41 gr of ADI AR2209. This is all well and good, but as I am a glutton for punishment and not a wealthy man, I have started casting bullets. (Bullets cost about twice as much in Oz than they do over there)
I have cast up a whole bunch of 185 gr .312 rounds gas checked and sized down to .311. I have have done the calculations and have loaded the cases with 12.6 gr of Trail Boss (70% of a case to the neck, as instructed by the manufacturer), primed with standard Winchester large rifle primers. I have not fired these yet, but intend to do so next weekend.
So, it might look like I know what I am doing, but there is something I don't understand and I would like you to explain for me. Using lead boolits in a rifle, I understand I cannot send them down the barrel at full speed (2,700 or thereabouts) without leading the barrel. But how do the gas check work? And how fast can I push a gas checked lead boolit? Can I load without gas check? If so, what is the limit on the velocity?
Most guys and gals who reload lead boolits are doing it for handguns, so the whole issue of gas checks never comes up. So please, can you discuss cast boolits for rifles and the role gas checks?
Also, are lead boolits still appropriate for hunting? I am thinking roos or bush pigs... medium/large-ish game.
I use a gas check and also powder coat mine, but I'm also only loading for a .30-30. So not moving that fast. Maybe around the 2000fps area. I haven't had time to test them for expansion yet, so won't be using them on game yet. However, there's a gentleman that uses powder coated (and gas checked) cast boolits and he gets great expansion from his. I've spoke with him at length before.
I enjoy your podcast, it's got me motivated to spend more time with my reloading press! I reload primarily for my hunting rifles, and I have worked up loads for .243, .30-06, and .284. I can usually get groups in the 1.5-2.0 inch range shooting off sandbags, but I'm trying to figure out how to shrink my groups down. I'm preparing for an elk hunt in NM with my .30-06 where I have had 400yd shots before. What would be the lowest hanging fruit in order of effect on MOA that would be helpful to get me below 1 MOA. I've worked up my powder charge, I'm not trimming brass yet. Using 180gr. Accubonds with 57gr of IMR 4350. (Max, I know, but most accurate charge for my rifle)
Any suggestions would be appreciated.
The first and easiest is weight sorting bullets and doing a proper ladder test. Those two things right there will make shooting a Elk at 400yd no problem.
: I have been reloading since the 70's with my uncle and then bought my first press in 1986 --- a Dillon square deal B. I have rebuilt this press several times with 10's of thousands of rounds produced. Since, I also have a 366 Pacific/Hornady 12 ga progressive; just retired my single stage Herters #3 and purchased a Dillon 550 to be used mostly for Rifle. I was Marine trained as a rifleman and Midwest trained by relatives in the art of "shootery".
So that is my background. My specific question today is about the .45 ACP case. I have been reloading thousands of .45 ACP rounds over the past 5-10 years because I will usually shoot 300-600 rounds per Month (mostly for local club IDPA). Many of the cases I use are "range brass" with unknown history. Generally they do pretty good, but I have been noticing that the bases of these cases are getting dings in them causing a burr that will not allow the round to go fully into battery. That is one of the problems. The other problem is that sometimes the whole base is too large to go into a case gauge or into the barrel of my pistol, if I am using as a case gauge. I shoot 3 different .45 caliber guns, a colt 1991A1 5" barrel; Colt Combat elite 5" barrel; and an officers model 3 1/2" barrel (all series 80). Each of these guns have different characteristics and needs for ammo, but I have not seen any problems with extraction or any marks on the bases after firing.
My specific question is what causes this misshaping of the bases?
I may have gotten a batch of cases that was shot from a gun with a deformed extractor. However, that would not account for the cases where the bases were circumferentially too big. The fix I have found is to take a jewelers file and lightly take about .001-.002 off of the circumference of the case base, checking it in a case gauge until it fits. These cases perform well. I have very few malfunctions.
My general recipe is:
3 Lyman 225 LRN, which I cast myself and lube sizer with a lyman lubrisizer using a beeswax lube. However I have just gotten into powder coating and I am find this to much more effective and results with less smoke. MountainRN
Has anyone ever looked into or done the reloading and ballistics certificate program from Sonoran Desert Institute? Thinking about doing that or their associates program. Thanks, John
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Thank you for listening.
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