40-65 Bullet diameter

[Glen Ring]

You 40-65 fellows...what diameter bullet does your rifle like?

[Chip Mate]

I shoot a .410 diam. Saeco as cast in 20-1 SPG lubed.

[bruce m]

glen,
work out what sized bullet will slide into a fired case.
the bullet you fire will be approx 0.001" bigger than that due to spring in the brass and bumping up before it starts to move.
bruce.

[Michael Johnson]

Glen for grease groove bullets, 408-409 depending upon the bullet.This is for a custom Winchester Hiwall with a tight neck chamber. Above 409 bullets, cartridges will not chamber easily. .408 is what I shoot for.

[Michael Johnson]

I have heard from my shooting partner that his Browning 40-65 likes the 410 best.

[Glen Ring]

Thanks Everyone.
Michael
One high wall Jeanne has eats 410, and a little bigger sometimes, without any problems.
Her New high wall is going to be finicky I think. Some rounds are snug and some say no go. I think the chamber is just a hair tighter and I think a sizer at 408 or 409 will be needed.

Jeanne's rifles always seem to be the finicky ones that require a lot of load development.

[Glen Ring]

Thanks Everyone.
Michael
One high wall Jeanne has eats 410, and a little bigger sometimes, without any problems.
Her New high wall is going to be finicky I think. Some rounds are snug and some say no go. I think the chamber is just a hair tighter and I think a sizer at 408 or 409 will be needed.

Jeanne's rifles always seem to be the finicky ones that require a lot of load development.

[John Boy]

what diameter bullet does your rifle like?

Likes both of these bullets
Saeco Magnum Bullet Mold #640 40 Caliber (408-410 Diameter) 370 Grain Semi-Point
Saeco Magnum Bullet Mold #740 40 Caliber (408-410 Diameter) 410 Grain Semi-Point