Martini Hornet

Tiratore, thanks for the dm,I think you should post that information in the thread to give everyone the bigger picture.
When trying to assist information is the key to getting good responses.

Ignition can cause vertical, ie weak firing pin spring.

But before replacing the spring, I would stop using the graphite in the necks and lightly crimp the bullet in place. Many found that crimping the bullet improved consistency.

What are the readings from your Garmin?

Did the groups change when the barrel was replaced?

Btw that’s a nice looking Martini.

Kiwi
 
Here's a Martini Cadet in 17AB.......left to me by my old hunting/fishing/gun show/gun range pal. Built at Knight's Gun Store, Ft. Worth.......circa 1968.

Kevin
17ABMartini.jpg
 
Tiratore, thanks for the dm,I think you should post that information in the thread to give everyone the bigger picture.
When trying to assist information is the key to getting good responses.

Ignition can cause vertical, ie weak firing pin spring.

But before replacing the spring, I would stop using the graphite in the necks and lightly crimp the bullet in place. Many found that crimping the bullet improved consistency.

What are the readings from your Garmin?

Did the groups change when the barrel was replaced?

Btw that’s a nice looking Martini.

Kiwi
1762084868295.png
 
Ignition - good suggestion. I guess I'll try to disassemble and have a look at firing pin movement. Primers look OK, but I've had problems with a sticky firing pin on a 44 1/2. Caused vertical. Never disassembled this martini. Hope the hinge pin does the trick.

Also - both barrels produced similar groups.

Uff da.
 
Using the 40 V-Max, I had the seating die set to produce SAMMI length. Hmmm. I measured how much I was jumping the bullet - 0.100 or so! I think I know what to try next. On my K-Hornet Cooper, I seated that bullet to touch or jam and that worked.
 
Back
Top