1377 chrony data

[burnt09]

Nasty, nasty weather today, so I spent some time in the shop running three new pellet types over the chrony. My gun is a completely stock 1377. Results below. The groups were shot using the factory peep sight. I wouldn't put too much stock in the groups sizes. They were all ragged hole groups, and that small of group is very difficult to measure accurately, especially with the pointed pellets which don't cut a very clean hole.  The pellet weights listed are the actual average weight of 20 pellets, which I weighed on a beam-type powder scale.

The Gamo Master Points were very inconsistent. I guess I should weigh some individual pellets and see how much they vary. I recently bought two tins of Gamo pellets from Cabelas; Master Point and Match. They sure look gnarly under magnification. Very rough and not very uniform. Probably a waste of $8.

PMPS: number of pumps
AVE:   average velocity
ES:     extreme spread
SD:     standard deviation
FPE:    foot-pounds energy
GRP:   group size (one 5-shot group)

Crosman Pointed Hunting (7.45gr)

PMPS     AVE     ES     SD     FPE    GRP
3           377     3.5    1.2     2.4     .22"
4           422     4.2    2.0     2.9     .23"
5           458     5.3    2.3     3.5     .23"
6           486     1.6    0.6     3.9     .19"
7           510     6.5    2.2     4.3     .31"
8           532     6.3    2.1     4.7     .24"
9           545     5.0    1.8     4.9     .19"
10         557     6.2    2.4     5.1     .18"

Crosman Destroyer (7.96gr)

4           410     3.4    1.2     3.0     .31"
5           444     7.6    2.8     3.5     .33"
6           474     8.3    3.3     4.0     .34"
7           498     5.5    2.2     4.4     .34"
8           516     4.3    1.6     4.7     .34"

Gamo Master Point (7.58gr)

4           408    12.2   4.8     3.0     .22"
5           447      4.5   1.7     3.4     .33"
6           482    14.4   4.9     3.9     .30"
7           504    18.7   6.5     4.3     .26"
8           522    18.5   6.8     4.6     .26"

Did I tell you how much I love my 1377?

[1377x]

nice numbers!
especially from a stock 1377!
i would probably stay away from the gamo master points

[BerkshireHunter]

Wow, those are some good #'s. Thanks for sharing. 

[Crosshairs]

Nice Burnt thanks for posting it's good to see other members 1377 numbers never saw one hit 600 fps out of the box, all of 1377 i own not one stock gun will reach 600 fps but we all no that i will shut up now. 
                                            Mike