So a little background first. I have a commercial Mauser 98 in 30-06, with a very pitted bore. It shots okay, 1 1/4 groups at best but always under 2" with its favorite loads. The big pain is the barrel fowls real quick and it is a real pain to clean. I have tried polishing the barrel with Tubs bullets and it helped but it is still bad and given the depth of the pits I really can't see them being polished out. Since I have always wanted a 35 Whelen and since I recently picked up a 03-A3 in 30-06 I plan to rebarrel the Mauser.
This got me to thinking of what to do with the old barrel. Being so pitted, I really can't see using it as a barrel on anything. So I have decided to preform a barrel length vs velocity experiment with it. The current barrel is 23 5/8" long (was 24 but I cut and Redneck recrowned, which helped accuracy). I plan to cut it to 22, 20, 18 and a little over 16" (too stay legal) and check velocity at each length.
The current loads planed are 56 grains of H4350 under a 180 grain Horniday interlock, this load shots well so I have a number of them loaded up. I also plan to load a faster powder with the same bullet, I am thinking Varget or IMR 4064. I plan to load which ever I choose up till I see pressure signs and then use that load regardless of accuracy. I am currently thinking of 4 shots at each barrel length to get a good average of velocity. The only other bullets I have on hand are some 168 grain, given the small difference in weight it does not seem to make sense to check a load with both of these.
Okay, finally to the reason for this post. Since after the barrel is cut there is no going back, I am wondering does anyone see a problem with this plan or other things it might pay to try, ie other bullets or powders. I do not want to turn this into a major research project but I also would not want to not look at anything else easy to check while I am at it. Any suggestions are welcome.
Hopefully it is needless to say; I will post the results here.