sml load workup

[rporter]

finally found sst and xtp bullets for a 45-70 conversion with an arrowhead breech plug.

so, how low do you start with 4198 powder? how low can you go?

 

[michiganmuzzy]

Ive shot as low as 45gr of i4198. Ive settled on 56gr. With a 340grain conical

 

[MrTom]

I had to take a second look at your avatar picture MM. Now that's funny.

 

[michiganmuzzy]

I had to take a second look at your avatar picture MM. Now that's funny.

Last good pic of me

 

[LBAhunter]

finally found sst and xtp bullets for a 45-70 conversion with an arrowhead breech plug.

so, how low do you start with 4198 powder? how low can you go?

You need to check your powder chamber. Which asg plug do you have?

 

[BuckDoeHunter]

Yes, details on the muzzleloader and bullet weight will help.

 

[rporter]

i have an e mail in to the builder but have not had a reply.

encore 45-70 barrel with a arrowhead gen 2 breech plug.
200gr hornady sst with a blue CR
200gr xtp with a blue CR
225 gr .451 hornady xtp knurled they seem a snug fit.
i have Imr 4198 and H 4198 -might prefer imr, just cause H is unobtanium
the modules are 45-70 size for a large rifle primer --or magnum?

also have 40 lb of N133 if any one has ever shot it.

i had the breech plug out but did not know to measure it. i cleaned the barrel and snapped a cap just to see.

what else dont i know?? should magnum primers be used?

 

[LBAhunter]

This might help....
https://www.modernmuzzleloader.com/...wder-column-in-my-cva-scout-conversion.36250/I'm thinking that plug is like mine, long. My Hankins DI plug is the replacement for that plug, if I'm correct.

 

[michiganmuzzy]

You need to check your powder chamber. Which asg plug do you have?

I forget about that sometimes. I have a long ASG plug in mine, and i THINK it could go as low as about 40-42 grains before it is too short. Ive never measured it. It just doesnt shoot anything well, below 55gr of i4198.

 

[Outdoornut1]

Last good pic of me

That's a nice one!

 

[rporter]

thanks for the info.
it would appear my powder column will take less than 40 gr of 4198. with 40 gr the mark of the ramrod is .3 in more than the mark with a wood plug inserted. but 40 is certainly safe.

 

[LBAhunter]

With the bullet weights you mentioned N110 would be the powder.