38-55 Winchester factory ammo

[Muskyhunter1]

Does anyone have some newer factory ammo they could pull a bullet and let me know the diameter of the slug. Looking for something .377 or better. I was at a shop the other day but you can't measure the slug as it is too far in the case.

Thanks.

 

[Eagleye]

I have pulled and measured bullets from some of the newer Winchester 38-55 ammo.
They were right at .3765" [I used a vernier micrometer to measure]
I have some Barnes original that are at .3772"
Also have some very old "Dominion" bullets from CIL that measure just over .377"

Keep in mind that the base of the slug will "bump up" a bit when it is fired, so a slightly undersized
slug may work just fine.
If you are using cast, though, a bullet .002"- .003" oversize will probably work best in your 38-55.

I have a 1980 built M94 Winchester and the groove diameter in it is just over .377"
It shoots all the above jacketed bullets well, and in addition, shoots the Barnes 255 grain .375" bullet
designed for the 375 Winchester just fine.

I can drive 255 grain jacketed bullets to 1750 fps in my rifle,
using H322 or IMR 3031.

As a side note, I shot my second biggest Whitetail with my 38-55 at 80 yards. Very impressive results!!

Regards, Eagleye.

 

[mbogo3]

Barnes still makes a 255gr in .377 or .378 I think? Harold

 

[Muskyhunter1]

Thanks guys.

I just managed to buy a box of .377 Barnes. A little pricey but hopefully they will shoot ok.

Eagleeye I guess I can always pick up a box of Winchesters for a back up if needed. Going to shoot the Barnes today.

Thanks Lads.

 

[WhelanLad]

howd you get on?
i am loadin my .375 down at around 38-55 velocitys... id say 1700fps with a 220 hordady fn.

solid round! im finding its a good penetrater!!

Its almost the Fallow rut down under an this year il be using the 375w as my walk about rifle when calling the bucks in peak Rut. close an exciting ####!!

 

[Muskyhunter1]

WhelanLad,

They shoot real well but there are a little pricey - oh well.

Going to keep at it with the cast and hopefully got a good round.

Saw your pic of your last fallow - awesome. Good luck in the coming season for you.