I am new to reloading for rifles and would like to ask a question regarding oversize bullets in an undersize bore. Rifle is a 9,3 (.3660) and the bore slugs out as .3655. The copper jacketed roundnose Bullets I have vary in diameter and measure upto .3665, or .001 over size. Question...will this over size bullet cause problems with pressure and should i refrain from using bullets slightly (.001 to .0015 oversize) in my rifle? I can sort thru the bullets if I need to so any advice is welcomed. thank you in advance. S-M

S-M, the difference you're talking about should not be a problem with proper loading technique. If you were dealing with a .003 difference or greater, then I'd start to be cautious, but not at .001-.0015. You wont even notice a difference. That'd be like the difference between using a bullet with a relatively soft jacket vs. a bullet with a really hard jacket. If you start low and work up, you'll be fine.

I wouldn't be concerned at all....

S-M:

I entirely agree with the above posts, you will have no problem at all.

I have a .400/.360 2 3/4" Purdey Nitro Express rifle which is supposed to be a .367" groove diameter, but the bores slug .3635". I shot off the shelf jacketed 9.3 (.366) bullets in it for a number of years with no problems. I now size them down in a reducing die and can't tell a difference, other than a slight improvement in accuracy. You'll be fine.
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"Serious rifles have two barrels, everything else just burns gunpowder."