Thompson Center questions

[planefixer da50]

tow has 3/8s fiberglass rod get a 10/32 thread rod end also a 8/32. they have a tapered 10/32 gag to screw to the end n just leave it on. will need to sand down the rod ends for tips to fit,then epoxy on, get some ss brad nails to pin ends. get 3f black to use in pan and charge start with 72gr n work+ or - from their. good luck mike

 

[jtkerk]

My GM drop in barrel for a TC loves 80 gr of 2F, a dry .54 wool wad, an .018 pocket drill patch lubed with TOW mink oil and a .530 ball.

My gun shoots slightly tighter groups with the wool wad. My main reason for using it is during deer season I may leave my gun loaded for months and don't want the patch lube to migrate into the powder charge.

I’ve started doing this past 2 seasons as well but never really had an issue in past years

 

[Rifleman1776]

at a 1:70" twist will I need a stout powder charge ?

Yes. You may need a charge in the range of 90-100 gr. to get good grouping. I once had a Jaeger with a 1:72" twist barrel. It wouldn't group until charges were in the 100-120 gr. range. Very uncomfortable to shoot. No fun and burned a lot of powder. I sold it.

 

[bpd303]

The best way to find out the ROT rate of twist on any rifle is to measure it yourself. Here is a good thread on doing that.
Measuring Rate of Twist in Your Rifle | The Muzzleloading Forum