i read the article to be found at the link below. this article indicates that an alternative for a MMP sub-base is the gas seal trimmed off of a 28 gauge shotshell wad. the cost savings here is unbelievable. 500 shotshell wads cost $9.00. 500 sub-bases from MMP cost $77.50. however, i measured a shotshell wad base and it is 0.533. the sabot measures 0.503. the bore in my rifle is 0.505. it seems like compressing the 0.533 wad down into a 0.505 bore may be something which will increase pressure levels.....maybe to a dangerous level, maybe not....i do not know. for that matter, i don't know for sure that it will increase pressure at all.

do any of you have any experience using the shotshell bases as suggested in the article linked below? the only real reason for doing this is economics, but it really one heckuva savings if it works. please advise.

http://www.gunweek.com/2004/feature0610.html