Anybody using v-N340 for 9mm

[PrairieDawg]

I picked up some v-N340 last week just to give it a try.
My lee book gives a load for a 124gr copper plated bullet(Aim Projectile)
as follows,

Starting grns 4.7 never exceed 5.3. Velocity from 1096-1171.
Min OAL 1.142.
I loaded to 4.7grns.

My problem is with the OAL They won't chamber in my SP-01.
A length of 1.100 seems to be what this gun likes best.
I am not sure what the pressure would be, but I am leery to seat the bullet deeper as it would almost be compressing the 4.7 grns of powder.

I have no other data for this powder bullet combination.

Any thoughts??

Thanks

 

[Canuck223]

Viht have an excellent website with a mountain of loading data.

However, 340 is a tad slow burning for run of the mill 9mm loads.