|
|
Post by bulasteve on Oct 17, 2015 9:48:08 GMT -5
Is any one here using this powder, Power Pro 300-MP ? Starting to see data for it. Seems to be promising a bit higher velo's for 357/41/44mags.. Maybe something to try next summer.
|
|
|
|
Post by nolongcolt on Oct 17, 2015 11:22:21 GMT -5
Its supposed to be the same powder as H110, but in my limited use of it I think its a tad slower. Mileage may vary.
|
|
jdoc
.327 Meteor
Posts: 727 
|
Post by jdoc on Oct 17, 2015 14:00:27 GMT -5
Power Pro 300 MP is slower than 296/110. Brian Pearce wrote an excellent article a few years back. Article is in Wolfe's Handloader or Rifle. Early tests indicated use of standard pistol primers gave best results with less shot to shot velocity variation. Mag pistol primers were not recommended until very large charge weights. 300 MP was not as sensitive as 296/H110 to pressure spikes when compressed.
I believe it is formulated at the old Olin, St. Marks powder facility. In fact it might be a canister version of WC297. That is just a guess on my part. In fact most of this info is from what I remember from Pearce's article.
If I find the article. I will do follow up post. I would guess somebody on the forum knows the mag and issue.
|
|
|
|
Post by 2 Dogs on Oct 17, 2015 14:12:14 GMT -5
Jdoc, my compliments. An excellent post!!
|
|
Paden
.375 Atomic
Lower Goldstream Creek
Posts: 1,132
|
Post by Paden on Oct 17, 2015 18:15:11 GMT -5
|
|
|
|
Post by bulasteve on Oct 18, 2015 7:48:41 GMT -5
Paden, thank you !
|
|
450ak
.30 Stingray
Posts: 458
|
Post by 450ak on Oct 18, 2015 9:23:35 GMT -5
I loaded 300mp and a 360 Keith for about 1250 in a 5.5 45. Load notes say WOOF. Don't know what else you would need....
|
|
