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Russ, I have scarfed my images from the internet and screen shots of Jim Shockey videos. I did a presentation on the "Penfold .458 WIN MAG" over at the 24hrBonfireOfTheVanities on 07/25/2024 posting at the "Square Table" thread. Hopefully sumbuddy will come forward to take credit for the rifle...

Ser Russ, You have done very well. Some images to dress up your thread: Jim Shockey guided by PH with a "Penfold .458 WIN MAG" ...

Yep, very nice.

400-grainers at 2500 fps are perfect in either .416 Rigby or .416 WBY MAG. Working up load from 100-gr of H4831 makes for easy, accurate and low pressure.

Toby458, The beatings shall continue until morale improves. I tried Talley QD-lever rings only because I had some on hand from my ignorant days when I thought vertically split rings were OK: I have busted too many vertically-split Talley rings to mess with them anymore. I also had a Leupold...

That front sight bead was held over the center of the target at 100 yards. Combat bead/coarse bead, covered most of the target. That's OK. I consider the iron sights zeroed with the factory ammo at 100 yards, 350-gr at 2850 fps MV. That'll do. Scope sight zeroing with whatever handloads will be...

Toby458, ditto curt672. Straight stack 3+1, no feed issues. Extractor is robust and AR-style. Beats the hell out of a Remington M700 "C-Clip/Pubic Hair Extractor." A googled parts image: And from an Excellent Brian Pearce article in RIFLE: The Howa extractor is of course like the Weatherby...

Toby458, Consider that the .416 Rigby has "NO Throat" other than a leade that starts at 0.4169" diameter at case mouth and tapers immediately by 0*54'16.5" leade hemi-angle (no Parallel-Sided Free-Bore/PSFB) That is according to SAAMI...

Outstanding work, Jason. Good writing. Good photography. Good folks doing good. Congratulations on your immediate success.

First year Whitworths and Interarms MkX were FN M98 actions, IIRC. Subsequently switched to Zastava actions. All of my Whitworth/Interarms MkX rifles from the 1980s are Zastava M98. The .458 WIN MAG has 3.4" magazine box in short magnum action. The .375 H&H has 3.6" magazine box and action is...

Fordy, Someone has used my handle in vain, with false accusations, so I must reply. Somehow you have confused someone into thinking I was shooting your elephant. The accusation: "Riflecrank ? shame on you for taking a very bad shot on a elephant that could go over the line and not be retrieved...

Fordy instructions: ... go to around the 1hr 25 to 30 minute mark ... DR-shooter Mike joked about doing that double-fire on purpose, even though (obviously) the bullet from the left barrel sailed high, missed the elephant. One bullet in the brain was sufficient. It was a mercy killing of...

Polish the ramp and rails and feed job is complete with the .300 WIN MAG M70 action from Portugal rebarreled to .458 WIN MAG.

Very cool U.S. Enfield 1917 .458 WIN MAG Full Stock. Here is No. 14 of my .458 WIN MAGs, arrived a few months ago, No. 6 Pac-Nor Sporter contour of 26" length and 1:10" twist, on a Portuguese Winchester M70 donor rifle: I doubt this will become a regular production item, but above box label...

Snowwolfe is referring to this Custom Shop model: Custom Shop 2006 by SN. A call to BACO/WINCHESTER at 800-333-3288 is required to track down those M70 Classics by serial number.

Sir Jerry sent ammoporn with redeeming social value: Bertram Brass does good for .577 NE 3". Note the resemblance to .45-90 2.4" loaded with 350-gr/.458-cal TSX-FB bullets, scaled up to 750-gr/.585-cal TSX-FB in 3" brass. Heh-heh-heh.

Made me laugh, so true. Add North Fork, CEB and Hammer Bullets to that list. List is getting pretty long.

50Gunner, aka "Ser Jerry" of the Square Table, has been my collaborator for over 5 years as we confirmed each other's findings in working up loads for the .458 WIN MAG. Here is the pinnacle of .458 WIN MAG do-all, his handloads: The Shock Hammer is now called the Stone Hammer, maybe...

Noted. The soft Woodleighs are best used in the antiques and low velocity big bores. No limits to MV on their HYDRO brass solids, but the CEB brass solids are better.

Nope. The DGX and DGX-Bonded are accused of being erratic in their expansion, sometimes asymmetric, lopsided, too little on one side, too much on the other side. Prone to veer off course because of bad steering. Steel jacket and lead core don't work well as "soft nose" whether bonded or not. DGS...

Every good citizen of the USA should own at least one gun for every anniversary of the Declaration of Independence. That will be 250 come July 4, 2026. One can never have too many books or guns.

Randy Garrett figured it out already. https://garrettcartridges.com/45-70-540gr-P-Hammerhead-20-CTGS_p_29.html 540-gr Hammer Heads of BHN 25 and gas checked, driven at about 1550 fps MV from a .45-70 Gov't. Vince Lupo had an exit on the side brain shot elephant, and a dead elephant...

Cartridges line up fine in the Win M70 Classic RUM-boxed 404 Jeffery. Without the windows it would hold only two in the box for RUM or 404 Jeffery. Extractor was fitted to "Norma 404 Rimless NE" (404 Jeffery) brass by Rusty McGee, GUNSMITH. I always provide feed dummies using preferred brass...

ftrovato's Barnes Banded Solid .416/400-gr makes me wonder if the Barnes "bronze" differs much from the CEB brass, metallurgically. I suppose the impact velocity would be of interest too. The ogived-FN nose of BBS versus the CEB BBW#13 FN nose shape is another worm in the can.

Fordy, Your posts ring clear as a bell here. Grumpy gumpy cleared that up with his reference to David jr, as I infer it. However he did type "458 wind bag" so your suspicion of his meaning was warranted. Three-figure tally of bovines, camels and horses for the latest walk about ? I hope the meat...

I forgot to answer that, corrected here. 1.) No modifications to the RUM M70 magazine box to be perfect with 3+1 for the 404 Jeffery. Roomier and slicker feeding for 404 Jeffery if any difference. 2.) GUNSMITH Rusty McGee did enlarge the bolt face to perfect for the 404 Jeffery. He has also...

Thanks for the appreciation of Bubba Gunwerkes. The example 404 Jeffery African Sheep Rifle's M70 RUM box, like roklok said, these windows are rectangular cutouts at right and left sides of top of box: Magazine battering by bullets in recoil do not deform the front of the magazine due to...

Custom all-weather 404 Jeffery ? I did mine about 20 years ago. I used a Winchester M70 Classic Stainless .300 RUM. That choice is practical because of the windowed magazine box and automatic good feeding with 404 Jeffery. Not due to bolt face, as the RUM has a smaller rim diameter and a fatter...

MacJenkins, Thanks for the report. That is some good "field research." Sample size good enough for statistical significance. Did you say you have 600 rounds of Hornady factory .450 NE ammo on hand ? Are you MidwayUSA ? Hornady, bless their heart, and their brass, but not their DGX-Bonded.

Mentioned above, but not pictured there is the Pre-'64 Winchester M70 .375 H&H magazine. Winchester perfected the geometry before shipping circa 1936-1937, pictured below is the year 1958 iteration. Note the follower is about a quarter inch short of magazine box inside-length of 3.620" for...

Ackley Hunter, Thanks for the link to the NECG follower. I forgot all about them as a magazine follower source. Noted ! Here are some of my measurements of magazine followers, for followers of this thread. The follower lengths vary from 0.005" longer (+) than COL to 0.275" shorter (-) than COL...

Let me try this again without the apostrophe and shouted: I AM BUBBA.

David jr, You are slippery as hell and nothing sticks. That characterization is not my original literary flare, but it fits you perfectly. I previously stated that I size all my cast bullets to .461" for use in both .458" and .459" grooves of .458 WIN MAG rifles. That simple factoid did not...

Aw shucks, it is Leroy and Connie Barry, not Berry: https://canyoncreekgunstocks.com/Display.asp

David jr, SAAMI spec, yes, minimum groove 0.458" with plus tolerance of 0.002" so anything from .458" to .460" groove diameter is "in spec." I have slugged fourteen .458 WIN MAGs on hand (among the forty ".45-cal rifles" I have), a few more factory barrels than custom barrels. 0.459" is the most...

Fordy has shown that filling hollow points with melted beeswax will improve expansion of monometal copper hollow points. Solidifies and stays put, no detriment to field use. Beeswax is noncompressible and acts like hydraulic fluid on impact ?

No. Why would I since the 404-gr Stone Hammer became available at my request ? There is no way that Bubba Hollow Pointing would not improve the TSX regarding expansion or accuracy. Too sharp an edge on the hollow point meplat might be avoided to prevent recoil battering in the magazine box. Keep...

CZDiesel, You have done very well there. GUNDOKU !!! Leroy Berry at Canyon Creek. I hope he is related to me via Johan Berry that landed at Jamestown, Virginia in 1607. You have the ultimate DGR. .458 WIN MAG will do it all from plains game to elephant. I have 14 of them but none as pretty as...

Bubba's hollow-pointing tools: Replaced by the 404-gr Stone Hammer:

The tiny step-drill bits are handy in a drill press. Bubba's other techniques are as proprietary to him as the Barnes 400-gr/.458 TSX is proprietary to Buffalo Bore. I am Bubba. Bubba made a test batch of six of the 480.0-gr/.458 T6 bullets. First three fired at 50 yard target from .458...

All good advice above, except for painting the stock ! Looks like a McMillan stock. Please, no paint over the McSwirley, molded in camo and checkering ! Same pattern I chose for this M70 drop belly: The two-tone polished bolt in blue receiver with stainless bottom metal reminds me of my...

I think cast bullets for elephants is a fool's errand unless willing to try something like this: Those poor-quality images are screenshots from our hero's Youtube. I have never tried it, but I might want a mould like Matt's Bullets used, and I recall Ranger Rick brand associated with...

David jr, Your proposed alloy is getting mighty close to Linotype, brittle and with BHN of 21-22 and I do not see how that will be brought to BHN 30 unless there is some arsenic in there for heat treatment. .458" cast bullets in the .458" to .459" grooves of custom and factory barrels are not...

318AE is showing his ignorance to call a carbon fiber stock, with perfect bedding and cute paint job, a "plastic"detractor on an RSM. The carbon fiber RSM stock I have with recoil plate embedded weighs 1# 15.8 oz. Remainder of the barreled action weighs 6# 14.4 oz. Total rifle weight is 8# 14.2...

The heavier the bullet, the more it is going to expand the nose at any given velocity, sectional density drives expansion. Maybe a 750-gr/.458 slowed down to 1500 fps would be the optimum hardcast for elephant penetration ? BHN25 or heat treated to BHN35 ? And how long would the BHN35 stay that...

Best use for a SAAMI .458 Lott: Pointy 300-gr bullets with only ogive ahead of case mouth, or shotshell loads for a rat killin' Hanta Virus Safari.

Even free-machining brass like CEB solids are made from will start to bulge the nose on water impact at 2800 fps. The only way a cast lead bullet can compete with the CEB 450-gr/.458 impacting at 2400 fps will be with hardest alloy possible and heavier weight at lower velocity. Should be a very...

Ruger was using the recoil plate on the M77 RSC .458 WIN MAG that had no quarter rib. They added integral quarter rib after the recoil plate was used before the RSM.

David jr, Your coaching on bullet casting was good. I do practically same as you by using: Lawrence Brand Magnum Shot + 50:50 Pb/Sn solder for a "92:5:2:1" alloy that I call "BHN25." PC-paint, gas check and +/- further lube, usually not desirable. However, I am troubled by you recommending...

Just like a Pre-'64 M70 .375 H&H, holds 4 down, but the .300, .338 and .458 WIN MAGs hold only 3 down, due to less tapered carts. About the only way I would consider improving any of the RSMs would be to 1) Re-bore the .375 H&H and chamber to .458 WIN MAG: Gen-1,-2,-3. 2) Re-chamber the...