CAS TOPICS > The Darksider's Den

Magtech 12 ga brass shotshell ID?

(1/2) > >>

Flinch Morningwood:
Playing around jerry rigging a reloading set up for the Magtech brass 12 ga shotshells I have on order.

Anyone know what the inside diameter measurement is?  It’s harder to find on line than you might think…. :)

Thanks in advance!

Dan Topper:
They get narrower at the base so not a consistent diameter. Not to sound snarky, but why do you want to know that dimension? If you are wondering about wads and which to use. I use 10ga. as overshot wads. Most other wads in the stack are 11ga or 12ga depending on the wad needed. I would suggest looking at Ballistic Products for both a reloading manual and wads. This is where I have been buying from for years. Good service and up until "supply chain issues" good inventory. A little more spotty now.   

Flinch Morningwood:
Like I said, playing around with a reloading jig and waiting for the shotshells I ordered to come in.

amzn_assoc_placement = "adunit0"; amzn_assoc_search_bar = "true"; amzn_assoc_tracking_id = "cascityinassociw"; amzn_assoc_ad_mode = "manual"; amzn_assoc_ad_type = "smart"; amzn_assoc_marketplace = "amazon"; amzn_assoc_region = "US"; amzn_assoc_title = "My Amazon Picks"; amzn_assoc_linkid = "e1151a28516e5a854211a2c6e0e85add"; amzn_assoc_asins = "B0C27CJTNW,B0BF12N3V9,B08BH4BD2J,B004UR76K6";

I've never loaded brass hulls but FWIW I have consistently read that the brass hulls are thinner than plastic ones so you need to go to 11 gauge wads to reload 12 Ga brass hulls to get a decent gas seal. Also (what I've read) very heavy loads can swell the brass and cause more difficult extraction from the chamber and require resizing more often which can lead to brass fatigue. I would expect black powder loads to give a longer life to the hulls than smokeless loads.

Howdy Flinch.  Not precisely what you are asking for, but maybe close enough?  I don't have Magtech hulls, but I have old Rem-UMC and Winchester hulls.  I don't have any of the Winchester at my current location, but I do have some of the Rem-UMC.  My understanding is that the Magtechs are the same as the Winchester (might have heard that they are made on the same old Winchester machinery) and I believe the Rem-UMC are the same.  Having said that, I have two loaded Rem-UMC with me at the moment and measured them as best as I could with my calipers.  The overshot card is about 1/2" down from the mouth, so I had room to insert the caliper blades.  These hulls are somewhere between  50 and 100 years old, loaded 50 times by me and unknown before I got them.  So while they chamber okay, I expect the mouths are slightly out-of-round.  On both, I measured between .765" and .773" by rotating the caliper around the inside.  Hope that helps.  Most people these days who shoot brass hulls use the Magtechs so it is likely that one of them will chime in.  Coffinmaker comes to mind.  Good luck.

BTW, I use no "special" tools or jig. I hand deprime mine by holding it over a trash can and hitting the punch (held with the same hand that is holding the hull) with a mallet, then push the hull down over the pistol primer on the table top to get it started in the primer pocket, then I seat the primer on my Lee LoadAll.  Then dip in the powder and drop in a .125" Nitro 11 ga over powder card., then back to the press to add the wad (red plastic wad) and then drop the shot) and I use a thin 11ga overshot card, glued in with Elmers wood glue.  A 10 ga overshot card would fit tighter, but I had a lot of the 11 ga and they work okay.  The Nitro card makes a good seal under the plastic wad which is a little loose in the hull.  I tried some fiber wads but the pattern is tighter with the plastic wad.  If you were thinking of loading smokeless, I have some info on that but it is going to be more effort and probably require resizing after shooting.


[0] Message Index

[#] Next page

Go to full version
Powered by SMFPacks Ads Manager Mod
Powered by SMFPacks Likes Pro Mod
Powered by SMFPacks Menu Editor Mod