A while ago I bought a CPA silhouette rifle with a 3 barrel set ( 38-50RH, 30-40, 32-40 ).

I have a Buffalo Arms 360gr Money bullet  (BACO377360M4).  The rifle doesn't like it.  Rarely it'll shoot semi-tolerable groups but mostly big ugly ones.  I suspect the nose isn't well supported in the 1.5 degree leade.   

The one that it likes is too light and stubby to be competitive at distance.  It's the Hoch 377310.  This bullet clearly shows that the rifle will shoot well, but I need something heavier and I'd prefer a better B.C.   This morning it put 9 shots into just under a minute of angle at 200m, with OE 1.5 black powder.

Any bullet suggestions for those of you with the same chamber on your rifles?

Chris.



   

What is the length of the PJ bullet if I might ask?  I have tried 16:1 and even 14:1 with the Baco Money with the same results. I've had excellent results with 16:1 and money bullet in all of my silhouette and BPTR rifles.  Just not this one yet.  

Does your CPA have their chamber or a custom one? This rifle has quite a shallow leade (1.5 degrees per side) which is different than the more popular Dan T. chamber a lot are using. 

thanks,   

Chris.

Thanks very much!

Chris.

Hi Rick!

It's a 1:12 twist Douglas.  I should have mentioned this in my original message.   I suspect that the long Money bullet I have might be slumping due to imperfect alignment.  I'm going to do another test next week, depending on the weather.  I forgot about a mold that I picked up a long time ago, and maybe it'll work.  It's a 355gr PJ elliptical.   The only odd thing about it is the nose is 0.880" long and the driving bands only 0.570" so it's mostly nose.

I'm also not certain whether all CPA rifles have the same chambers.  I was looking at the specs on one of the bullets Arnie Seitz designed for the CPA and it looks like it's set up for a 3 degree (per side) leade.  Mine should be 1.5 per side with a 0.050" freebore, based on the reamer print that Gail sent me when I ordered the rifle.   

I haven't tried neck tension with the Money bullet as I don't have  a seater that fits the nose profile. I'd like to see how it does with 0.001" neck tension as I have a few rifles that like that.  At the moment I'm slip fitting in Hornady brass as the bullet is a tight slip fit in that.   

Chris.

Hello Rick,

I hereby challenge you the next time you come to Tacoma to shoot a ten shot iron sight bench match.  My new right eye might just help me beat you

Jack

Hello Chris,
I think your bullet length at 1.485 inches is acceptable. My rule of thumb, based on empirical testing, is to have 2 additional inches over what the Greenhill Formula predicts. You have 2.3 inches extra. For what it is worth, the Jones Money bullet I use, 367 grains, is 1.425 inches long. 

My velocity is a bit lower than yours. Mine are typically 1,285 to 1,310 fps, depending on the lot of 1.5 Swiss. In my view, more velocity is good, especially with the 38's for silhouette.

I have that Hoch mold. You have encouraged me to try it in the 38-50.

Cheers
Rick Moritz

You have to make it to Tacoma first.  I will be shooting my antique DST high wall but you can shoot one of them no external hammer monstrosities if you want.

Kurt hasn’t got dates yet. 
Ad for wagers.  My momma didn’t raise no fool (despite what most people say) who would wager anything substantial with a national champion.  I could make up a trophy. I have a box full of them