Are precision .22 rimfires ammo picky or
- By grauhanen
- All Things Rimfire
- 21 Replies
Does the process (how it is chambered/Crowned) dictate how a good lot of ammo performs? and I am speaking using quality match ammo(Lapua, Eley, RWS, Norma Match)
The chambering and crowning are only two parts. The round goes into the chamber and exits the muzzle.I edited to clarify, the process of chambering/crown. The same parts are available to anyone yet some rifles perform better than others across a wider variety of ammo and lots.
The part in between -- the bore -- also has a role because not all bores are equal. The bore is at least as, perhaps more, important, as chambering and crowning in ammo performance. Performance is not dictated by one or two parts of the trifecta.
The trouble is the data is inconsistently collected and even more inconsistently analyzed. The vast majority of the shooters referred to are very casual shooters. The vast majority of results are little more than anecdotal reports, often tinged with misinformation and misunderstanding.We have more .22s being shot than ever before in the history of .22, how can we not know more and have answers?
More serious shooters frequently don't record or analyze results in sufficiently similar or uniform ways. Reliable answers depend on comparing data that is as much apples to apples as possible.
To illustrate with an example, there's little or no accumulated reliable evidence for the performance of fast twist barrels versus standard twist. There are anecdotal reports one way or another but little that's the result of careful testing under similar conditions.
Barrels are indeed different. But each ostensibly does the very same thing, which is to send rounds downrange with as much accuracy and precision as possible.Barrels are different from one to another but we have seen a trend over 300 barrels or so.
Trends seen over hundreds of presumably good barrels may suggest that similarities are the result of the ammo. In other words, when ammo is good it does well in many barrels. When ammo is less-than-good, it does less well in many barrels.