.458 Lott 400 gr Quickload request

Forrest Halley

Forrest Halley

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Hello All,

So I have this really great rifle that I struggle with: a Ruger No. 1 in .458 Lott. I am toying with a 400 grain load in order to get in more practice with the rifle. I have a lot of W748 and would like to use that. I have tried 80.0 grains loaded to the cannelure. It was very accurate and shot well to the fixed sights, but the projectile was engaging the rifling which is a shocker as it's lighter than the 500 grain projectiles I was using. I had a bullet pulling event today which really inconvenienced me for a moment. So I shortened the OAL to the forward crimp groove. Ammo now passes the plunk test with flying colors. I am curious where I stand with pressure and combustion.
Case length is 2.800"
Projectiles are ≈0.970"
COAL is 3.250"
Can someone please run this in Quickload? Thank you for your time.
 
Have you tried Gordons Reloading Tool ? Freeware copy of Quickload. I dont know how it compares-just that I have downloaded it and put some loads into it that I use and it seems to work (458 win mag load that I chronographed at 2140 fps was predicted at 2146 fps)
 
Forrest, I just saw your post and am willing to help. But some additional info would be helpful. What bullet are you using? Just saying 400 Gr. doesn't help. Also knowing the capacity of a fired but unresized case would be useful. Simply weigh the empty case, then fill it with water so that there is a convex curve of water above the neck and weigh it again then subtract the weight of the empty case. All weights are measured in grains.
 
Forrest, attached is just one possible scenario.
upload_2020-6-22_9-32-15.png


Use at your own risk as the load is close to Maximum allowed pressure.
 
I know this is not what you asked for but here is another option you might consider. It is very pleasant to shoot and is low pressure. The bullet is a 305gn Lehigh DOA. This was shot with a Blaser R8.
IMG_1647.jpg
IMG_1648.jpg
 
Shootist43 said:
Forrest, attached is just one possible scenario.


Use at your own risk as the load is close to Maximum allowed pressure.
Click to expand...
I am now no longer close to my components to be able to measure. I am using a 400 Speer bullet. I do appreciate your help and time.
 
Revised QL simulation for a 400 Gn. Speer.
upload_2020-6-22_10-54-9.png
 
@Shootist43, sir where did you purchase your quick load ballistic program? Thank you!
 

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Thank you sir!!!
 
Us Para Ordinance guys have got to stick together. IMHO QuickLoad isn't perfect, but it will get you in the ballpark. I try to "marry" QL with Chuck Long's barrel timing to get a good starting point, then go from there.
 
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