TC White Mt Carbine Twist Rate

dennis53

Can you tell me the twist rate of my White Mt Carbine? I thought it was 1 in 48", but I have my doubts. I can't seem to measure it with the cleaning rod method.

I've had good luck with round balls, but I'm thinking of trying something a little heavier for whitetail. It's a .50 cal.

Thanks,
Dennis53

mongrel1776

What little I can dig up on the 'net indicates your rifling twist is 1-48". The fact that roundballs shoot well through it would indicate that as well -- unless you're using light powder charges, roundballs tend to jump the rifling in shallow-groove, fast-twist bores.

If your concern is whether or not you can use heavier (i.e. conical) bullets, a 1-48" twist in .50 caliber will generally stabilize them. Inherent accuracy won't necessarily be as fine as shooting heavy bullets with a faster twist, but then the same wisdom decrees that roundballs won't shoot as accurately out of the 1-48" barrel as one rifled more in the 1-60" to 1-72" range. Fact is, even being somewhat a compromise, a 1-48" twist in a good barrel will deliver accuracy superior to what the shooter of the gun is capable of attaining, with either ball or bullet.

I'd say buy the bullet(s) of your choice, load up, and see how they work. One brand or design may very well prove ideal for your purpose.

FWIW, I hunt whitetails with a .50 roundball rifle. Unless long shots are on the agenda, more "oomph" isn't necessary -- though, having said that, I will admit to being a fan of the philosophy that too much power in a gun is infinitely preferable to the alternative.

allen griggs

dennis: Have you had any problems with the roundball on deer?
I sure haven't.

dennis53

Thanks for the responses. I have not had any problems with the round ball, but I am looking for a way to increase the effective range. BTW, I load 70 grs with the round ball as it seems to be the most accurate load.

Thanks again,
Dennis53

Underdog2264

Yes, you are at 1:48 twist on the White mountain. If you are looking for a harder hitting load, try the 350 grain maxi-hunter with 90 grains of 2f.

mississippi ramblin man

Hi, I have a document that I got direct from T/C about a month ago that lists twist rates for all their traditional barrels. It shows WMC in .45 1:48, in .50 1:38, in .54 1:48. I would be happy to send a copy to anyone interested. Regards....MRM

rgerge

I not positive, but I'll be dipped if it isn't 1:48

Lucky007

For several years, I used 370 gr TC Maxi ball conicals over 90 grains of either Pryrodex or 80 grs of 777. I found that there was NO expansion, and that even with small does at 25 yards, the deer would run for over 100 yards (with a through and through lung shot). This year I went to Hornady Great Plains 385 gr lead hollow points,...got great accuracy with 75 grs of 777, but never got a shot after I found that load combo. I feel that the heavier weight bullets shoot more accurately in the Whit Mountain. I have tried several types of smaller weight bullets in the WM and they didn't shoot nearly as well.