Almost ready to load, Please check my plan. 577/450
Here's my plan for load my first ever BP rounds:1. Anneal case mouths2. Full length size cases the first time3. Prime case with large rifle mag primer4. Pour in powder until it just reaches the neck5....
View ArticleRe: Almost ready to load, Please check my plan. 577/450
That should basically do it. I just have a few things to add.The primer type matters little I find when using BP, so a magnum primer or regular large rifle or 209 shotshell primer don't make much...
View ArticleRe: Almost ready to load, Please check my plan. 577/450
CZ the first 8 inches of the MH barrel is tapered. Depending on the bullet dia. you may not be able to seat the bullet long enough to touch the rifling. As far as lube grooves exposed I wouldn't worry...
View ArticleRe: Almost ready to load, Please check my plan. 577/450
Your plan looks good to me - and yes, you can seat out those bullets, no problems there. In order to fit the bullet into the rifling, you will probably need something like a .467 or bigger bullet...
View ArticleRe: Almost ready to load, Please check my plan. 577/450
You don't mention which brass case you are using. Depending on type, that could be a lot more than the 85 grain LOC load. If reformed brass that could be as much as 115 grains to reach the base of the...
View ArticleRe: Almost ready to load, Please check my plan. 577/450
Richard,I have brand new unfired Jamison brass, I'm waiting for my 650 degree temp stick to arrive so I can anneal.Is that 85 grains by volume? Is that what it would read on my BP measure?I know that...
View ArticleRe: Almost ready to load, Please check my plan. 577/450
Brendan,Some limited airspace doesn't hurt a thing - the "no airspace with BP" is kinda like an urban myth. Just don't go below reasonable levels, like filling only a 3rd of the volume for a gallery...
View ArticleRe: Almost ready to load, Please check my plan. 577/450
Brendan contacted me directly to ask whether he should anneal the Jamison brass he has before loading it for the first time. Unfortunately, although I got a batch of Jamison ,577/.450 cases, I have...
View ArticleRe: Almost ready to load, Please check my plan. 577/450
When I first got my Jamison brass I reloaded 3 until failure. They cracked at the mouth on the 3rd use, so while fairly hard, one firing shouldn't hurt it.As to avoiding airspace in BP, it isn't an...
View ArticleRe: Almost ready to load, Please check my plan. 577/450
The myth part is about any airspace. A small airspace won't hurt. An airspace large enough to allow the powder to lie below the primer vent is bad. You will get better efficiency in black powder with...
View ArticleRe: Almost ready to load, Please check my plan. 577/450
And, I might add, that goes for any powder - be it black or smokeless. Not enough smokeless will also cause a lot of problems.
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