Loading for a new barrel

[JEFFPPC]

WOW, another problem that isn't.

 

[Wild Bill IV]

TTE:
I read articles about this subject matter in shooting sports magazines years ago!! As the barrel speeds up from burnishing that rolled, sharp, and jagged edge from the rifling process (just like sharpening chefs knives, reducing rolling and increasing polishing), the pressure will drop due to less friction!!! It also slowly knocks down the higher regions of rifling along the length of the rifling itself!!! Thus reducing bullet engravement cross sectional area and reducing friction and pressure even further!! As a hunter, which I assume you are doing with a 35 Whelen, the pressure will drop slightly!!! However, hunters tend to load on the high side, not like most target shooters!!! The only way a newly broke in barrel is going to increase in pressure is due to build up of copper/carbon layering causing more friction and/or reduced area between the major diameter of the bore and the bullet restricting blow by gas pressure relief!!

A barrel that is polished will still have a thinner, and sharper, rolled edge!!! It still needs bullets (less than unpolished barrels) to burnish that finer rolled rifling edge!!

This is a myth!!! A BS statement!!! As long as you keep the barrel clean enough in the break in phase and preform periodical cleaning after!!!!

I believe this myth was born, in the old days, due to the magical, all purpose use of WD-40 (1001 uses) being used as a short cut for true bore cleaning and oiling!! It was the occasional shooter/hunter that shot WD-40 down the barrel after every hunting season shooting less than a 20 round box a year!!! They used WD-40 as a wetable deterrent (the WD in WD-40 that feels oily due to the emulsifing agent) to prevent rust and never cleaned those rifles!!! And, every season, the pressure kept building slowly due the soapy like build up of the emulsifier and fowling mixture!! By the time that hunter/shooter got to the magical number, in those days, of 100 to 150 rounds (Mostly High Carbon Steel Barrels) for break in, they were experiencing heavier recoil!!!

 

[Wild Bill IV]

Why would you go straight to Max Load. Start in the middle and see where it shoots the gest group

The OP is talking about a 35 Whelen, and a hunting rifle!!! Hunting loads run at or near max velocity node for maximum down range energy and momentum!!! Not the most accurate node like target shooters that dont worry about energy, but care about recoil!!! Hunters don't worry about how many X's they get on a heart, they just want to be able to hit the 10 circle (the heart) with a single COLD BARREL SHOT AT MAXIMUM EFFECTIVE RANGE, paying the price of heavier recoil!! Or, they may elect to hit inside the 9 circle (shoulder) with as much energy that they can wring out of the cartridge!!! And, the more energy on a hit, the less chance of the game running off wounded on a slight miss or animal movement just prior to sear disengagement!! THE HARDER YOU KNOCK DOWN THAT GAME, THE LESS CHANCE OF IT GETTING BACK UP!!! Words from this old veteran big game and varmint hunter!! Big differences between target and hunting load development!!!

If the OP is fire forming the 30-06 brass parent of the 35 Whelen, getter done in one shot and move straight into the high pressure, high down range energy hunting load development!!!

DOES THIS ANSWER YOUR QUESTION????