Overfilling 243 win mag case

[mosh338]

Hi

Ive been reloading for 243 win mag with 87 grain Hornaday V max. I find that with 47 grains Somchem S 385 powder I find that the powder is just below the case mouth and the bullet seats on the powder.

Is this a problem?

 

[jimbires]

I'm assuming you are talking about a 243wssm . if this is what you have my quickload shows 47 grains at 100.7% case fill . max is 49.4 grains at 105.8 % case fill . so this should be ok , as far as a compressed load goes . are you using a funnel with a drop tube ? a drop tube funnel will help settle the powder for easier bullet seating . usually about 105% case fill is about as full as I want to work with .



if you are working with a 243 win 47 grains will be 101.2 % case fill .

 

[Mikecr]

I use a long droptube on a funnel myself. But powder 'fit' for a given capacity really comes down to SLOWER filling.
Don't drop the powder in the case. Pour it, slowly.

 

[mosh338]

Thanks guys

I'm using a 243 win mag with a conventional funnel and drop tube. I was just concerned when I saw that the powder was just below the mouth. I have loaded progressively up from 45 grains so I should pick up any pressure problems. My main concern was that I was compressing the powder when seating the bullet.

 

[HARPERC]

My main concern was that I was compressing the powder when seating the bullet.

Most manuals identify compressed loads as such. The Nosler I have lists % of case capacity. Compressed loads are a fact of life with some combinations.

I like loads that are slightly compressed, but still slightly below what most sources identify as maximum. Just me.

 

[wstanton]

Mosh, You should be fine, finding powders that are near the fill capacity for a case have the tendency to be more accurate. I fill my .243 up all the way with H-1000 and it loves it!