OK I have the 416 Taylor shooting. now I want to trim the cases.

any recomendations??

Thank You

I trim mine to 63.25mm, max length is 63.5mm or 2.5".

Paz

The long answer, best and most accurate way is to make a chamber cast and measure from the base of the neck to the junction of the neck and the throat beginning. That will give you the exact MAXIMUM FIRED AND EXPANDED(LENGTHENED)measurement. You can then use that measurement to calculate max trim OAL minus 0.010- 0.015" for brass growth.

Remember this cartridge isn't a standard and I'm not sure if it has been SAAMI standardized so the reamer can be ground to just about whatever the reamer maker decides on.

Alternatively and the easiest is to trim to 2.48" and call it good.

My Taylor has a long neck section so I can let the cases grow to 2.53" before triming back to 2.52". It also has a longer than normal throat...almost but not quite a "freebore".

My sizer sqeezes the neck 0.003"-0.004" and I polished the expander to 0.003" smaller than bullet diameter, 0.413" to get a nice tight bullet grip.

Just lucky on the Hornady sizer dimensions.

Also just pushes back the shoulder about 0.002" and the base about the same...very little brass working through the whole reload/fire/reload cycle so I can get over 10 full house reloads without a problem although I only use once fired rounds for hunting large game, the rest go for small game, load development and practice.

I also fiddled with a Redding bushing die just to see how close I could get as far as neck sizing only goes, but you have to neck turn if you want to get all that anal.

Bottom line is this isn't brain surgery or benchrest shooting and depending on how much nitpicing(case prepping) you like to do, as long as you trim enough so the bullet doesn't get pinched when chambered you'll be OK.


All of my reference materials concerning the 416 Tayor give trim to length as 2.48".

Ken Howell's book says 2.500" is max length.
A-Square manual says trim to 2.490"

Thank you