Klikitarick-This was a reply from Hodgdon powder reguarding a load using three different componant's than listed in the Hodgdon manual and was called into question by the user,so he e-mailed to be sure.A 300 grain Nosler at 2282 fps out of the Guide Gun.Here is the responce from Hodgdon about different componant's and there load data and velocities.
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Your loads should be just fine and certainly within the operating limits of your rifleYou may be running slightly higher pressures than our test data due to the use of the nickel plated brass and factory crimp. Nickel plating of brass does decrease the capacity of the brass by a tiny fraction and the factory crimp does a better job of retaining the bullet than a standard roll crimp. The increase in pressure over our results would be minor.



Some folks would point to the velocity you are getting and say that your pressures must be high to get this level of performance from your short barrel. There can be several explanations for this. Variation in chamber, throat, bore, different primers, brass, bullets and, of course, the test equipment can all cause changes in resultant velocity/pressure. As I am certain you are aware, pressure is not linear with velocity. And, as is commonly known, we shoot SAAMI test barrels with minimum chamber, bore, throat dimensions which means that, on average, consumer firearms will get lower pressure with the same loads due to increased chamber size and easy of bullet passage in the bore.



The bottom line here is that you are getting no signs of pressure that would indicate any problems. There is no research that would indicate your brass would give significantly higher pressures than the same brand of brass without plating. There is no research suggesting that there are significant differences in pressure caused by changing brands of large rifle primers. You are not experiencing any type of indication which would lead us to conclude that you have any problem at all using this load in your rifle.



Mike Daly

Customer Satisfaction
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As you can see there was know cause for concern.
Jayco.